11-Letter Words Starting with I

All 406 eleven-letter words that start with I: page 1 of 2

IC

• icebreaking20adj. Serving the purpose of breaking ice.
• ichthyology26n. A branch of zoology that studies fish.
• ichthyosaur22n. Any fishlike marine reptiles of the extinct order †Ichthyosauria of the...
• iconography22n. A set of specified or traditional symbolic forms associated with the...
• iconostasis13n. A wall of icons between the sanctuary and the nave in an Eastern...
• icosahedral17adj. Of, relating to, or having the shape of an icosahedron.
• icosahedron17n. A polyhedron with twenty faces.

ID

• idealogical15adj. Ideologic.
• identically17adv. In an identical manner.
• identifying19adj. Allowing a person or thing to be easily or uniquely distinguished and...
• ideographic20adj. Pertaining to an ideograph or ideography.
• ideological15adj. Of or pertaining to one or more ideologies.
• idiographic20adj. Of or pertaining to individuals.
• idiotically17adv. In an idiotic manner.
• idolization21n. The act of idolizing, adoring or worshiping, especially to excess.

IG

• ignominious14adj. Especially of a person: deserving of disgrace or dishonour...

IL

• illimitable15adj. Impervious to limitation, without limit.
• illiquidity24n. The condition of being illiquid; a lack of liquidity; difficulty in...
• illogically17adv. In an illogical manner, without following methods of sane and correct...
• illuminance15n. The luminous flux incident on unit area of a surface; commonly measured...
• illuminated14adj. Irradiated by light, lit.
• illuminator13n. One who illuminates; an explainer.
• illusionary14adj. Illusory; pertaining to an illusion, or of the nature of an illusion.
• illusionism13n. The performance of magic tricks.
• illusionist11n. One who works with illusion or sleight of hand.
• illustrated12adj. Containing illustrations.
• illustrator11n. A person who draws pictures (especially illustrations in books or...
• illustrious11adj. Admired, distinguished, respected, or well-known.

IM

• imaginarium16n. A place devoted to stimulating and cultivating the imagination.
• imagination14n. The image-making power of the mind; the act of mentally creating or...
• imaginative17adj. Having a lively or creative imagination.
• imidazoline23n. A five-membered heterocycle containing three carbon atoms, two...
• immediately19adv. In an immediate manner; instantly or without delay.
• immigration16n. The act of immigrating; the passing or coming into a country of which...
• immobiliser17n. A splint.
• immobilized27adj. Subject to immobilization.
• immortalise15v. To give unending life to, to make immortal.
• immortality18n. Never dying.
• immortalize24v. To remove the effects of normal apoptosis.
• immunoassay18n. A test for the presence of a substance using the reaction of an...
• immunogenic18adj. That produces a reaction from the immune system; antigenic.
• immunologic18adj. Immunological.
• impartation15n. The act of imparting something, or the thing imparted.
• impartially18adv. In an impartial manner; fairly.
• impassioned16adj. Filled with intense emotion or passion; fervent.
• impassively21adv. In an impassive manner.
• impassivity21n. The state of being impassive.
• impatiently18adv. In an impatient manner.
• impeachable22adj. Able to be impeached (of a person).
• impeachment22n. The act of calling into question or challenging the accuracy or...
• impecunious17adj. Lacking money.
• impedimenta18n. Equipment intended for an activity that serves as more of a hindrance...
• imperfectly23adv. In an imperfect manner or degree; not fully or completely.
• imperforate18adj. Not perforated.
• imperialism17n. The policy of forcefully extending a nation's authority by territorial...
• imperialist15adj. Of, or relating to imperialism.
• imperiously18adv. In an imperious manner; in the style of an emperor.
• impermanent17adj. Not permanent; unperpetual.
• impermeable19adj. Impossible to permeate.
• impersonate15v. To pretend to be (a different person); to assume the identity of...
• impertinent15adj. Insolent, ill-mannered or disrespectful; Disregardful.
• impetuosity18n. The quality of making rash or arbitrary decisions, especially in an...
• impetuously18adv. In an impetuous manner; with sudden force.
• impingement18n. The act of impinging.
• implantable17adj. Capable of being, or designed to be, implanted (within the body etc.).
• implausible17adj. Not plausible; unlikely; dubious.
• implausibly20adv. In an implausible or dubious manner.
• implementer17n. A person who implements something.
• implication17n. The act of implicating.
• implicative20adj. Tending to implicate or to imply; pertaining to implication.
• implicature17n. An implied meaning that does not semantically entail.
• imploringly19adv. Beseechingly; in a manner that beseeches or implores.
• importantly18adv. Used to mark a statement as having importance.
• importation15n. The act or an instance of importing.
• importunate15adj. Persistent or pressing, often annoyingly so.
• importuning16n. The act by which somebody is importuned; pleading harassment.
• importunity18n. Constant and insistent demanding or proposing, especially if regarded...
• impoundment18n. A body of water impounded within an enclosure, such as a reservoir.
• impractical19adj. Not practical; impracticable.
• imprecation17n. The act of imprecating, or invoking evil upon someone; a prayer that a...
• imprecatory20adj. That imprecates or invokes evil.
• imprecisely20adv. In an imprecise manner.
• imprecision17n. A lack of precision or exactness; poor accuracy.
• impregnable18adj. Of a fortress or other fortified place: able to withstand all attacks...
• impressment17n. The act of seizing for public use; impressing into public service...
• impropriety20n. The condition of being improper.
• improvement20n. The act of improving; advancement or growth; a bettering.
• improvident19adj. Failing to provide for the future; reckless.
• improvising19n. Improvisation.
• imprudently19adv. Without prudence; in an imprudent manner.
• impulsively21adv. In an impulsive manner; with force; by impulse.
• impulsivity21n. The quality of being impulsive, impulsiveness; inclination to act on...

IN

• inadvertent15adj. Not intentional; not on purpose; not conscious.
• inadvisable17adj. Unwise; not recommended; not prudent; not to be advised.
• inalienable13adj. Not subject to being alienated, that is, surrendered, taken away, or...
• inalienably16adv. In an inalienable manner.
• inattention11n. Lack of attention, or failure to pay attention.
• inattentive14adj. Of or pertaining to a lack of attention; not paying attention; careless.
• inauthentic16adj. Not authentic or genuine; spurious.
• inbetweener16n. A person who specializes in tweening in an animation studio.
• incantation13n. The act or process of using formulas and/or usually rhyming words, sung...
• incantatory16adj. Constituting, employing, dealing with, or suitable for use in...
• incarcerate15v. To lock away; to imprison, especially for breaking the law.
• incarnadine14adj. Of the pale pink or pale red colour of flesh; carnation.
• incarnation13n. An incarnate being or form.
• incentivize25v. To provide incentives for; to encourage.
• incertitude14n. Uncertainty, doubt, insecurity.
• incessantly16adv. In a manner without pause or stop, especially to the point of...
• incidentals14n. Small items of expenditure that are not individually identified.
• incinerated14adj. Destroyed by incineration.
• incinerator13n. A furnace that burns refuse.
• incipiently18adv. In an incipient manner.
• inclination13n. A physical tilt or bend.
• inclusively19adv. In an inclusive fashion.
• inclusivism18n. The practice of incorporating disparate or unreconciled elements in a...
• inclusivity19n. The quality of being inclusive; inclusiveness.
• incoherence18n. The quality of not making logical sense or of not being logically...
• incoherency21n. The quality of being incoherent; lack of coherence.
• incompetent17adj. Lacking the degree of ability and responsibility necessary to do a task...
• incongruent14adj. Out of place, incompatible, inharmonious, not congruent.
• incongruity17n. The state of being incongruous, or lacking congruence.
• incongruous14adj. Not similar or congruent; not matching or fitting in.
• inconstancy18n. Lack of constancy; lack of consistency in thought, emotion or action.
• incontinent13adj. Unable to contain or retain.
• incorporate15v. To include (something) as a part.
• incorporeal15adj. Having no material form or physical substance.
• incorrectly18adv. In an incorrect manner.
• incredulity17n. Unwillingness or inability to believe; doubt about the truth or...
• incredulous14adj. Skeptical, disbelieving, or unable to believe.
• incremental15adj. Pertaining to an increment.
• incriminate15v. To accuse or bring criminal charges against.
• inculcation15n. The teaching of something by using frequent repetition.
• inculpatory18adj. That causes someone to be blamed for something.
• indefinable17adj. That which cannot be precisely defined or put into words.
• indehiscent17adj. Not dehiscing when mature; not dehiscent.
• indentation12n. The act of indenting or state of being indented.
• independent15adj. Not dependent; not contingent or depending on something else; free.
• indifferent18adj. Ambivalent; unconcerned; uninterested, apathetic.
• indigeneity16n. Quality of being indigenous; membership of an indigenous group.
• indigestion13n. A condition of heartburn, nausea, or other stomach-related pain...
• indignantly16adv. In an indignant manner; with indignation.
• indignation13n. An anger aroused by something perceived as an indignity, notably an...
• indirection14n. An indirect action or process.
• individuate16v. To make, or cause to appear, individual.
• indivisible17adj. Incapable of being divided; atomic.
• indivisibly20adv. In an indivisible manner.
• indocyanine17n. Any cyanine dye containing an indole group.
• indometacin16n. A compound with anti-inflammatory, antipyretic, and analgesic...
• indomitable16adj. Incapable of being subdued, overcome, or vanquished.
• indubitable16adj. Clearly true; providing no possibility of doubt.
• indubitably19adv. In a manner that leaves no possibility of doubt.
• inductively20adv. In an inductive manner; by using induction.
• indulgently16adv. In an indulgent manner.
• industrious12adj. Hard-working and persistent.
• inebriating14adj. Having intoxicating qualities.
• inebriation13n. The state or characteristic of drunkenness.
• ineffective22adj. Not having the desired effect; ineffectual; otiose.
• ineffectual19adj. Unable or insufficient to produce effect.
• inefficient19adj. Not efficient; not producing the effect intended or desired...
• inelegantly15adv. In an inelegant manner.
• ineluctable15adj. Impossible to avoid or escape; inescapable, irresistible.
• ineluctably18adv. In an ineluctable manner.
• inequitable22adj. Unfair, unequal or unjust.
• inescapable17adj. Impossible (unable) to avoid or escape; not escapable.
• inescapably20adv. In an inescapable manner.
• inessential11adj. Not essential.
• inestimable15adj. Not able to be estimated; not able to be calculated, computed or...
• inestimably18adv. In an inestimable manner, or to an inestimable degree.
• inexcusable22adj. Not excusable.
• inexcusably25adv. In an inexcusable manner.
• inexistence20n. The state of not being, not existing, or not being perceptible.
• inexpedient21adj. Not expedient; not tending to promote a purpose; not tending to the end...
• inexpensive23adj. Involving little expense; reasonable in price; cheap.
• infanticide17n. The murder of an infant.
• infantilism16n. An emotional dependency on being treated as an infant.
• infantilize23v. To reduce (an adult) to the state or status of an infant.
• infantryman19n. A soldier employed in an infantry role.
• infatuation14n. An immensely strong love or sexual attraction.
• infectivity22n. The ability of a pathogen to establish an infection.
• inferencing17n. The process of making inferences; inferring.
• inferential14adj. Of, pertaining to, or derived using inference.
• inferiority17n. The quality or state of being inferior.
• infertility17n. The condition of being infertile; of having poor fertility.
• infestation14n. The presence of a large number of pest organisms in an area or field...
• infiltrator14n. One who infiltrates an organization or territory; an undercover or...
• infinitival17adj. Of, pertaining to, or formed from an infinitive.
• inflammable20adj. Capable of burning.
• influencing17n. Influence.
• influential14adj. Having or exerting influence.
• infographic22n. A visual representation of information.
• infomercial18n. A program-length television commercial, typically between thirty...
• informality19n. The condition of being informal.
• informatics18n. Synonym of computer science.
• information16n. Something that provides a definitive characterization or description of...
• informative19adj. Providing information; especially, providing useful or interesting...
• infrequency28n. The characteristic of being infrequent.
• infuriating15adj. Extremely annoying, frustrating or irritating.
• ingathering16n. The gathering in of a literal or metaphorical harvest.
• ingeniously15adv. In an ingenious manner; using ingenuity.
• ingenuously15adv. In an ingenuous manner; frankly, straightforwardly.
• ingratitude13n. A lack or absence of gratitude; thanklessness.
• inhabitable18adj. Fit to live in; habitable.
• inheritable16adj. That can be inherited.
• inheritance16n. The passing of title to an estate upon death.
• initializer20n. One who, or that which, initializes.
• injectivity26n. The property of being injective.
• injudicious21adj. Showing poor judgement; not well judged.
• injuriously21adv. In an injurious manner; in a manner that injures or damages.
• innerspring14adj. That is constructed using springs enclosed within a padded fabric cover.
• innervation14n. The act of innervating or stimulating.
• innocuously16adv. In an innocuous manner.
• innumerable15adj. Not capable of being counted, enumerated, or numbered.
• inoculation13n. The introduction of an antigenic substance or vaccine into the body to...
• inoffensive20adj. Not offensive.
• inoperative16adj. Not working or functioning; either idle or broken.
• inopportune15adj. Unsuitable for some particular purpose.
• inquiringly24adv. In an inquiring manner.
• inquisition20n. An inquiry or investigation into the truth of some matter.
• inquisitive23adj. Eager to acquire knowledge; acquisitive.
• inscription15n. The act of inscribing.
• inscrutable15adj. Difficult or impossible to comprehend, fathom, or interpret.
• inscrutably18adv. In an inscrutable manner.
• insectarium15n. A type of live insect zoo, or a museum or exhibit of live insects and...
• insecticide16n. Any of various substances used to kill insects.
• insectivore16n. Insect-eating animal or plant.
• insensitive14adj. Expressing or feeling little or no concern, care, compassion, or...
• inseparable15adj. Unable to be separated; bound together permanently.
• inseparably18adv. In an inseparable manner.
• insertional11adj. That involves insertion.
• insidiously15adv. In an insidious manner.
• insincerely16adv. In an insincere manner.
• insincerity16n. The state or property of being insincere, lacking sincerity or...
• insinuation11n. The act or process of insinuating; a creeping, winding, or flowing in.
• insistently14adv. In an insistent manner; pressingly.
• insouciance15n. Carelessness, heedlessness, indifference, or casual unconcern.
• inspiration13n. The drawing of air into the lungs, accomplished in mammals by elevation...
• inspiratory16adj. Of or pertaining to inspiration (in all senses).
• inspiringly17adv. In an inspiring manner.
• inspiriting14adj. Giving impetus or spirit; animating, encouraging.
• instability16n. The quality of being unstable.
• installable13adj. Capable of being installed.
• installment13n. One of a series of parts, whether equal or unequal to the other parts...
• instantiate11v. To represent (a concept, theme, or principle) by an instance.
• instatement13n. The act or process of instating.
• instigation12n. The act of instigating, or the state of being instigated; incitement...
• instinctive16adj. Related to or prompted by instinct.
• instinctual13adj. Of, relating to, or derived from instinct.
• institution11n. A long-established organization or type of organization, particularly...
• instruction13n. The act of instructing, teaching, or providing with information or...
• instructive16adj. Conveying knowledge, information or instruction.
• insufflated18adj. Disseminated by blowing.
• insultingly15adv. In an insulting manner; to a degree that causes insult.
• insuperable15adj. Impossible to achieve or overcome or be negotiated.
• integralism14n. An ideology according to which a nation is an organic unit...
• integrality15n. The condition of being integral.
• integrating13adj. That integrates.
• integration12n. The act or process of making whole or entire.
• integrative15adj. Tending toward or promoting integration.
• intelligent12adj. Of high or especially quick cognitive capacity, bright.
• intemperate15adj. Lacking moderation, temper or control.
• intensifier14n. That which intensifies.
• intensional11adj. Of or pertaining to intension.
• intensively17adv. In an intensive way.
• intensivist14adj. Of or pertaining to intensive care.
• intentional11adj. Intended or planned; done deliberately or voluntarily.
• intentioned12adj. Having a certain intention.
• interacting14adj. Taking part in an interaction.
• interaction13n. The situation or occurrence in which two or more things act upon one...
• interactive16adj. Interacting with or communicating with and reacting to each other...
• interagency17adj. Between or among agencies.
• interannual11adj. Occurring between years, or from one year to the next.
• interatomic15adj. Between atoms.
• interbedded16adj. Occurring between beds of rock.
• intercalary16adj. Describing a time period inserted between others; leap, (as in leap...
• intercalate13v. To insert an extra leap day into a calendar in order to maintain...
• interceding15n. An intercession.
• intercensal13adj. Between censuses.
• interceptor15n. Anyone or anything that intercepts something else.
• intercessor13n. A mediator, one who reconciles enemies or pleads for another.
• interchange17v. To switch (each of two things).
• interchurch21adj. Between churches.
• intercooled14adj. Cooled by an intercooler.
• intercooler13n. A heat-exchange device located between other devices or processes.
• intercostal13adj. Between the ribs of an animal or person.
• intercounty16adj. Between counties.
• intercourse13n. Communication, conversation.
• intercrural13adj. Taking place or located between the legs.
• interdealer12adj. Between dealers.
• interdental12adj. Pertaining to the space between the teeth.
• interdicted15adj. Prohibited or forbidden.
• interdictor14n. An aircraft designed to bomb enemy supply operations.
• interesting12adj. Arousing or holding the attention or interest of someone.
• interethnic16adj. Between ethnic groups, or their members.
• interfacial16adj. Of or pertaining to an interface.
• interfacing17n. A layer of fabric inserted between other layers of a garment to provide...
• interfering15n. Interference.
• intergender13adj. Taking place between people of opposite genders.
• intergrowth18n. A growing together and through each other of two crystals.
• interiority14n. The state or quality of being interior.
• interisland12adj. Between islands.
• interlacing14n. The pattern or motion of something that interlaces.
• interleague12adj. Between leagues; often specifically between the two major leagues of...
• interleukin15n. Any of a group of cytokine proteins important in the regulation of...
• interlinear11adj. Inserted between the lines of a text.
• interlingua12n. An interlanguage.
• interlining12n. A cloth lining between the outer and inner layers of a garment.
• interlinked16adj. Synonym of interconnected.
• interloping14n. An act of intrusion or encroachment.
• intermedium16n. An intermediary.
• intermingle14v. To mix (things) together.
• intermixing21n. A process of intermixture.
• internalism13n. The doctrine that a particular mental phenomenon, such as motivation or...
• internalist11adj. Holding that a particular mental phenomenon, such as motivation or...
• internalize20v. To make something internal; to incorporate it in oneself.
• internation11adj. Between nations; international.
• internecine13adj. Mutually destructive; most often applied to warfare.
• interneuron11n. A multipolar neuron that connects afferent and efferent neurons.
• interocular13adj. Between the eyes.
• interoffice19adj. Taking place between different offices of a single organization or...
• interplanar13adj. Between planes.
• interpolate13v. To introduce (something) between other things; especially to insert...
• interpreted14adj. Executed directly, rather than via a compiled binary representation.
• interpreter13n. A person or thing that interprets the meaning of something for another...
• interracial13adj. Between or among two or more different races.
• interregnum14n. A period of time between the end of one monarch's reign and the...
• interrelate11v. To form relationships between multiple things.
• interrobang14n. The nonstandard punctuation mark ⟨‽⟩ (a combination of ⟨?⟩ and ⟨!⟩)...
• interrogate12v. To question or quiz, especially in a thorough or aggressive manner.
• interrupter13n. One who or that which interrupts.
• interschool16adj. Occurring or taking place between two or more schools.
• intersexual18adj. Between the sexes.
• intersperse13v. To mix two things irregularly, placing things of one kind among things...
• interstrand12adj. Between strands.
• intersymbol18adj. Between (adjacent) symbols.
• intersystem16adj. Between systems.
• intertribal13adj. Between tribes.
• intertwined15adj. Twined or twisted together; entwined.
• intervallic16adj. Of, or pertaining to, intervals.
• intervening15n. Intervention; mediation.
• interviewee17n. Someone being interviewed, i.e. the person answering the questions.
• interviewer17n. One who interviews.
• intimidated15adj. Subjected to intimidation.
• intimidator14n. One who intimidates.
• intolerable13adj. Not tolerable; not capable of being borne or endured.
• intolerably16adv. In an intolerable manner; beyond endurance.
• intolerance13n. The state of being intolerant.
• intoxicated21adj. Stupefied by alcohol, drunk.
• intractable15adj. Not tractable; not able to be managed, controlled, governed or directed.
• intractably18adv. In an intractable manner; uncontrollably; unmanageably.
• intradermal14adj. Within the skin.
• intraductal14adj. Within a duct.
• intraocular13adj. Inside or within the eye.
• intrapartum15adj. During parturition (childbirth; labor).
• intraracial13adj. Within a single race (group of people); of or by members of the same...
• intrasexual18adj. Within a group of individuals of the same sex.
• intrathecal16adj. Delivered into the spinal canal (intrathecal space surrounding the...
• intravenous14adj. Inside the veins.
• intrepidity17n. The quality of being intrepid; bravery.
• intricately16adv. In an intricate manner; with involution or infoldings; with perplexity...
• introverted15adj. Thinking about internal or spiritual matters.
• intrusively17adv. In an intrusive manner; by intrusion.
• intuitional11adj. Pertaining to, derived from, or perceived by, intuition; intuitive.
• intuitively17adv. By intuition; with skill or accuracy, but without special training or...
• intumescent15adj. That becomes swollen, especially upon exposure to heat.
• invalidated16adj. Made invalid.
• inventively20adv. In an inventive manner.
• investigate15v. To inquire into or study in order to ascertain facts or information.
• investiture14n. The act of investing, as with possession or power; formal bestowal or...
• invigilator15n. A person who supervises students during an examination; a proctor.
• invigorated16adj. Feeling full of energy or strength; refreshed and revitalized.
• involuntary17adj. Without intention; unintentional.
• involvement19n. The act of involving, or the state of being involved.

IO

• ionospheric18adj. Of or pertaining to the ionosphere.

IP

• ipecacuanha20n. The root of Carapichea ipecacuanha, used as an emetic or purgative; a...
• ipratropium17n. An anticholinergic drug C₂₀H₃₀NO₃⁺ that is used as an inhalational...
• ipsilateral13adj. On the same side of the body.

IR

• iridescence16n. The condition or state of being iridescent; exhibition of colors like...
• ironmongery17n. Tools and hardware that can be bought in an ironmonger's shop.
• ironworking19n. The making of useful or decorative items from iron.
• irradiation12n. A process of sterilization whereby radiation is passed through a bag...
• irredentism14n. A nationalistic doctrine advocating the annexation of foreign lands...
• irredentist12n. Someone who calls for the seizure or recovery of territories or states...
• irreducible16adj. Not able to be reduced or lessened.
• irreducibly19adv. In an irreducible manner or state.
• irrefutable16adj. Undeniable; unable to be disproved or refuted.
• irrefutably19adv. In an irrefutable manner; beyond the possibility of refutation.
• irregularly15adv. In an irregular manner; without rule, method, or order.
• irrelevance16n. Lack of relationship with the topic at hand; lack of importance.
• irrelevancy19n. The quality of being irrelevant or inapplicable; lack of pertinence or...
• irreligious12adj. Having no relation to religion.
• irremovable18adj. Not removable; immovable; inflexible.
• irreparable15adj. Incapable of being repaired, amended, cured or rectified; unrepairable.
• irreparably18adv. Such that it cannot be repaired.
• irreverence16n. The state or quality of being irreverent; want of proper reverence...
• irrevocable18adj. Unable to be retracted or reversed; final.
• irrevocably21adv. In an irrevocable manner; in a manner which prevents the ability to be...

IS

• isobutylene16n. Methylpropene; isobutene.
• isobutyrate16n. Any salt or ester of isobutyric acid.
• isochronous16adj. Happening at regular intervals; isochronal.
• isoelectric15adj. Having equal electric potential, or the same number of positive and...

Questions about these words

How many eleven-letter words that start with I are there?

Word.ws lists 406 eleven-letter words that start with I, plus 1,582 rare ones.

What are common eleven-letter words that start with I?

information, interesting, immediately, independent, improvement, immigration, inspiration and institution.

Which of the eleven-letter words that start with I has the highest letter score?

infrequency scores 28 points with the standard letter tile values.

Related word lists

• 11-Letter Words
• Words That Start with I
• 10-Letter Words Starting with I
• 12-Letter Words Starting with I
• Q Words Without U