12-Letter Words Starting with D

All 277 twelve-letter words that start with D

DA

• dactinomycin22n. Actinomycin D.
• daunorubicin17n. A synthetic anthracycline antibiotic C₂₇H₂₉NO₁₀ which is a nitrogenous...

DE

• deactivation18n. The act of deactivating something, such as a bomb or alarm.
• deallocation15n. The act of deallocating.
• deathstalker20n. Leiurus quinquestriatus, an extremely venomous scorpion of the family...
• debaucherous20adj. Excessively indulgent in sensual pleasures.
• debilitating16adj. Causing a loss of energy or strength.
• debilitation15n. The act or process of debilitating, or the condition of one who is...
• decalcomania19n. The process of transferring decorative designs onto surfaces using...
• decapitation17n. Beheading; the act of beheading or decapitating.
• deceleration15n. The act or process of decelerating.
• decentralise15v. To cause something to change from being concentrated at one point to...
• decentralize24v. To cause to change from being concentrated at one point or site to...
• decidability21n. The state or condition of being decidable.
• decipherable22adj. That can be deciphered, understood or comprehended.
• decipherment22n. The analysis of documents written in ancient languages, where the...
• decisiveness18n. The state or quality of being decisive.
• deckbuilding23n. The construction of a deck of playing cards in certain games where...
• decluttering16n. The act or process of removing clutter; tidying, removing unwanted or...
• decommission19v. To take out of service or to render unusable.
• decomposable21adj. Able to be decomposed.
• decompressor19n. That which decompresses.
• decongestant16n. A drug that relieves congestion, e.g. pseudoephedrine.
• decongestion16n. The process of decongesting something.
• deconversion18n. Undoing or dissolution of conversion.
• decoratively21adv. In a decorative manner.
• decorticated18adj. Having had the cortex removed.
• decreasingly19adv. In a decreasing manner; progressively less.
• defenestrate16v. To eject or throw (someone or something) from or through a window.
• deferoxamine25n. A siderophore, produced by the actinobacterium Streptomyces pilosus...
• defibrillate18v. To stop the fibrillation of the heart in order to restore normal...
• definability21n. The quality of being definable.
• definiteness16n. The state or quality of being definite.
• definitional16adj. Of or relating to a definition.
• definitively22adv. In a way that is not only decisive, but also conclusive and final.
• deflagration17n. The act of deflagrating; an intense fire; a conflagration or explosion....
• deflationary19adj. Associated with or tending to cause deflation.
• defragmenter19n. That which defragments; a program that performs defragmentation.
• degeneration14n. The process or state of growing worse, or the state of having become...
• degenerative17adj. Characterized by or causing degeneration.
• deglaciation16n. The removal of all glacial land ice from a region, usually by melting.
• dehumanising19adj. Causing dehumanization.
• dehumanizing28n. An act of dehumanization.
• dehumidifier22n. A device for removing the moisture content from air.
• deionization22n. The use of ion exchange to remove ionic substances from a solution.
• delamination15n. The separation of the layers of a laminar composite material as a...
• delegitimize25v. To make something less legitimate.
• deleveraging18n. The process of something being deleveraged.
• deliberately18adv. Intentionally, or after deliberation; not accidentally.
• deliberation15n. The act of deliberating, or of weighing and examining the reasons for...
• deliberative18adj. That deliberates, considers carefully.
• delicatessen15n. A shop that sells cooked or prepared foods ready for serving.
• delightfully23adv. In a delightful manner.
• delimitation15n. The act of delimiting something.
• deliquescent24adj. Seeming to melt away.
• deltamethrin18n. A pyrethroid insecticide.
• delusionally16adv. In a delusional way.
• demagnetized26adj. From which all magnetism has been removed.
• demethylated22adj. That has been subjected to demethylation.
• demilitarize24v. To remove troops from (an area).
• demodulation16n. The inverse of the effect of modulation, or applying a signal to a...
• demographics23n. The characteristics of human populations for purposes of social studies.
• demonization24n. The act of demonizing.
• demonologist16n. An expert in the study of demonology.
• demonstrable17adj. Able to be demonstrated.
• demonstrably20adv. In such a manner that is capable of being demonstrated, shown, or...
• demonstrator15n. One who demonstrates anything, or proves beyond doubt.
• demoralizing25adj. Disheartening.
• demotivating19adj. That causes demotivation.
• demotivation18n. A feeling or state of being demotivated.
• denaturation13n. The deliberate addition of a noxious substance to alcohol to make it...
• denomination15n. The act of naming or designating.
• denotational13adj. Of or pertaining to denotation.
• denouncement17n. An act of denouncing; a denunciation.
• densitometer15n. A device that measures the optical density of a material; especially to...
• densitometry18n. The measurement of optical density by use of a densitometer.
• denticulated16adj. Denticulate, having many small toothlike protrusions.
• denuclearize24v. To ban, remove or reduce the numbers of nuclear weapons in an area.
• denunciation15n. Proclamation; announcement; a publishing.
• deoxycholate28n. Any salt or ester of deoxycholic acid.
• deoxygenated25adj. Containing no or reduced oxygen.
• deoxyglucose26n. A deoxy sugar derived from glucose.
• deoxyuridine24n. A deoxyribonucleoside related to uridine.
• departmental17adj. Of or relating to a department.
• depoliticize26v. To remove something from political influence.
• depopulation17n. The act of depopulating or condition of being depopulated; the...
• depositional15adj. Of, pertaining to, or in the nature of a deposit or a deposition.
• depreciating18adj. That is declining in value.
• depreciation17n. The state of being depreciated; disparagement.
• depressingly19adv. In a depressing manner.
• depressurize24v. To reduce the air pressure within a chamber.
• deprogrammer20n. One who deprograms.
• deprotection17n. The removal of a protecting group.
• deprotonated16adj. That has had one or more protons removed.
• deregulation14n. The process of removing constraints, especially government-imposed...
• deregulatory17adj. Of or pertaining to deregulation.
• derivational16adj. Of or pertaining to derivation; relating to that which is derived.
• derivatively22adv. In a derivative fashion.
• dermabrasion17n. A cosmetic medical procedure in which the surface of the epidermis of...
• dermatologic18adj. Dermatological.
• dermatophyte23n. Microsporum species.
• derogatorily17adv. In a derogatory manner.
• desalination13n. The process of removing salt from sea water in order to make drinking...
• desaturation13n. The conversion of a saturated compound to an unsaturated one by...
• desensitized23adj. Not sensitized.
• desiderative17adj. Having or indicating wish or desire.
• desirability18n. The state of being desirable.
• desmoplastic19adj. That produces adhesions.
• desmopressin17n. A synthetic replacement for vasopressin.
• despairingly19adv. In a despairing manner.
• despitefully21adv. In a despiteful manner; spitefully.
• despoliation15n. A stripping or plundering; spoliation.
• despondently19adv. In a despondent manner.
• despotically20adv. In a despotic manner.
• desquamation24n. The shedding of the outer layers of the skin.
• destigmatize25v. To remove the disgraceful or ignominious characterization; to remove...
• destructible17adj. Liable to destruction; capable of being destroyed.
• determinable17adj. Able to be determined or limited.
• determinedly19adv. In a determined manner.
• dethronement18n. Removal from a superior place in a hierarchy.
• detribalized25adj. Detached from one's tribe, or from tribal traditions.
• developments20n. A group of building complexes or apartments. Often used for low income...
• dextrocardia23n. A congenital abnormality in which the heart is transposed to the right...

DI

• diabolically20adv. In a diabolical manner.
• diagrammatic20adj. In the form of a diagram.
• dialectician17n. Someone skilled in dialectics: someone able to arrive at logical...
• dialectology19n. The study of dialects.
• diamagnetism18n. A weak form of magnetism that is only observed in the presence of an...
• diatomaceous17adj. Of, pertaining to, or containing diatoms or their coverings.
• diazomethane27n. The simplest diazo compound, CH₂=N⁺=N⁻; a toxic, yellow, explosive gas...
• dicarboxylic29adj. Having two carboxylic groups.
• dichotomized30adj. Divided into dichotomous parts.
• dictatorship20n. A type of government where absolute sovereignty is allotted to an...
• didactically21adv. In a didactic manner.
• diencephalon20n. The region of the human brain, specifically the human forebrain, that...
• diethylamide22n. The derivative of a compound formed by adding an amide group with two...
• diethylamino21n. The univalent radical (CH₃CH₂)₂N- derived from diethylamine.
• differencing22adj. Involving the taking of differences or noting of changes.
• differential19adj. Of or pertaining to a difference.
• difficulties21n. A series of frustrations.
• digitization23n. The conversion of data or information from analog to digital or binary.
• diisocyanate18n. Any compound containing two isocyanate anions or functional groups, but...
• dilapidation16n. The state of being dilapidated, reduced to decay, partially ruined.
• dilettantism15n. The act of behaving like a dilettante, of being an amateur or dabbler...
• dimerization24n. Any chemical reaction in which two monomers react to form a dimer.
• diminishment20n. The act of diminishing; reducing in size, quantity, or quality.
• dinucleotide16n. Any molecule consisting primarily of two nucleotide units.
• diphtheritic23adj. Resembling or related to diphtheria.
• dipropionate17n. Any salt or ester containing two propionate groups.
• dipyridamole21n. A drug that inhibits thrombus formation when given chronically and...
• directedness16n. The state or quality of being directed.
• directorship20n. The office of a director.
• disaccharide21n. Any sugar, such as sucrose, maltose and lactose, consisting of two...
• disadvantage18n. A weakness or undesirable characteristic; con; drawback.
• disaffection21n. Discontent; unrest.
• disaffiliate19v. To cease to have an affiliation (with); to take steps to break an...
• disaggregate16adj. Not aggregate.
• disagreeable16adj. Causing repugnance; unpleasant to the feelings or senses; displeasing.
• disagreeably19adv. In a disagreeable manner.
• disagreement16n. An argument or debate.
• disallowance18n. The action of not allowing, or of withdrawing allowance.
• disambiguate18v. To remove ambiguities from; to make less ambiguous; to clarify or...
• disappearing18n. Disappearance.
• disappointed18adj. Defeated of expectations or hope; experiencing disappointment; let down.
• disapproving21adj. Expressing or conveying disapproval.
• disassembler17n. A computer program that examines another computer program and attempts...
• disassociate15v. To separate (oneself); to dissolve one's association with a person...
• disastrously16adv. In a disastrous way. (Of the nature of a disaster; calamitously.).
• disbelieving19adj. Refusing to believe; skeptical or incredulous.
• discerningly19adv. In a discerning manner.
• discipleship22n. The condition of being a disciple.
• disciplinary20adj. Having to do with discipline, or with the imposition of discipline.
• disciplining18n. The use of punishment to compel behavior.
• discolouring16n. Discoloration.
• discomfiting21adj. Tending to discomfit (“embarrass greatly; upset the composure of...
• discomfiture20n. An emotional state similar to that arising from defeat; frustration...
• disconcerted18adj. Ruffled; upset and embarrassed.
• disconnected18adj. That is no longer connected.
• disconnector17n. A switching device used to open an electric circuit when there is no...
• disconsolate15adj. Cheerless, dreary.
• discontented16adj. Experiencing discontent, dissatisfaction.
• discontinued16adj. Permanently no longer available for sale.
• discordantly19adv. In a discordant manner.
• discouraging17adj. That causes discouragement.
• discourteous15adj. Impolite; lacking consideration for others.
• discoverable20adj. Able to be discovered.
• discrediting17n. The act by which something is discredited.
• discreteness15n. The state or quality of being discrete, separated or distinct.
• discriminant17n. An expression that gives information about the roots of a polynomial...
• discriminate17v. To make distinctions.
• discursively21adv. In a discursive manner.
• disdainfully20adv. In a disdainful manner.
• disembarking22n. A disembarkation.
• disenchanted19adj. Disappointed; having lost belief or enthusiasm through bad experience.
• disestablish18v. To deprive (an established church, military squadron, operations base...
• disfranchise21v. To deprive someone of some privilege, especially the right to vote; to...
• disgorgement17n. An act of disgorging (giving something up involuntarily).
• disgustingly18adv. In a disgusting manner.
• disheartened17adj. Discouraged, despairing.
• dishonorable18adj. Without honor, or causing dishonor.
• dishonorably21adv. In a dishonorable manner.
• disincentive18n. That which discourages a particular behaviour; a deterrent.
• disinfectant18adj. Serving to kill germs or viruses.
• disinfection18n. Treatment with disinfectant materials in order to destroy harmful...
• disinflation16n. A decrease in the inflation rate.
• disingenuous14adj. Not honourable; unworthy of honour.
• disintegrate14v. To undo the integrity of; to break into parts.
• disinterment15n. The act of disinterring.
• dislodgement17n. The state or process of being dislodged.
• dismembering20n. The act or process whereby something is dismembered.
• dismissively21adv. In a dismissive manner.
• disobedience18n. Refusal to obey.
• disorganised15adj. Lacking order or organisation; confused; chaotic.
• disorganized24adj. Lacking order or organization; confused; chaotic.
• disorienting14adj. That causes disorientation; confusing.
• dispatchable22adj. Capable of being dispatched.
• dispensation15n. The act of dispensing or dealing out; distribution.
• displacement19n. The act of displacing, or the state of being displaced; a putting out...
• dispossessed16adj. Homeless.
• disputatious15adj. Of or relating to something that is in question as to its intent or...
• disqualifier25n. One who, or that which, disqualifies.
• disquisition22n. A methodical inquiry or investigation.
• disreputable17adj. Not respectable, lacking repute; discreditable.
• disruptively21adv. In a disruptive manner.
• dissatisfied17adj. Feeling or displaying disappointment or a lack of contentment.
• disseminated16adj. Spread around; widespread.
• disseminator15n. One who, or that which, disseminates.
• dissertation13n. A formal exposition of a subject, especially a research paper that...
• dissociation15n. The act of dissociating or disuniting; a state of separation; disunion.
• dissociative18adj. Removing or separating from some association.
• distillation13n. The act of falling in drops, or the act of pouring out in drops.
• distinctness15n. The property or degree of being distinct.
• distractedly19adv. In a distracted manner.
• distractible17adj. Capable of being distracted.
• distributary18adj. That distributes.
• distribution15n. An act of distributing or state of being distributed.
• distributism17n. An economic ideology, based on Catholic social teachings, according to...
• distributive18adj. Relating to distribution.
• districtwide19adj. Across an entire district.
• disturbingly19adv. In a disturbing manner.
• ditransitive16adj. Of a class of verbs which take both a direct and an indirect object. An...
• diversionary19adj. That serves as a diversion.
• diverticular18adj. Of or pertaining to the diverticulum.
• diverticulum20n. A small out-pouching of an organ wall such as the large intestine or...
• divertimento18n. Composition that has several short movements, a style that composers...
• divinization25n. The act or process of making divine.
• divisibility21n. The state of being divisible. The state capable of being divided.
• divisiveness19n. The characteristic of being divisive.

DO

• documentable19adj. Capable of being supported by documentary evidence.
• dodecahedral20adj. Having twelve plane surfaces.
• dodecahedron20n. A polyhedron with twelve faces; the regular dodecahedron has regular...
• dodecaphonic23adj. Of or pertaining to dodecaphony.
• dogmatically21adv. In a dogmatic manner.
• dolphinarium20n. An aquarium that houses dolphins.
• dolutegravir17n. An integrase inhibitor used to treat HIV infections.
• domestically20adv. In a domestic manner.
• domesticated18adj. Selectively bred to live with or around humans. (of an animal or a...
• dopaminergic20adj. Containing, involving, or transmitting dopamine; involving dopamine...
• doppelganger19n. A ghostly double of a living person, especially one that haunts such a...
• dorsiflexion23n. Flexion in the dorsal direction.
• dorsolateral13adj. Of, pertaining to, or situated on both the back and the side.
• dorsoventral16adj. Of, pertaining to, or situated at the back and front of something.
• downloadable19adj. Capable of being downloaded.
• downregulate17v. To decrease the number of cell receptors by using downregulation.
• downsampling21n. An instance of something being downsampled.
• downshifting23n. A social trend towards living a simpler, less ambitious life with a...

DR

• draftsperson18n. A draftsman or draftswoman.
• dragonslayer17n. One who slays a dragon.
• dramatically20adv. In a dramatic manner.
• dreamcatcher22n. A decorative Native American object in the form of a hoop and net with...
• drinkability22n. The state or property of being drinkable.
• dropshipping23n. A retail model where goods are sent directly from the supplier to the...
• drospirenone15n. A synthetic progestogen C₂₄H₃₀O₃ that is an analog of spironolactone...

DU

• dumbfounding22adj. Bewildering; astonishing.

DY

• dysautonomia18n. Any of a range of dysfunctions of the autonomic nervous system.
• dyslipidemia21n. An imbalance of lipids (especially cholesterol) in the blood...
• dysmenorrhea21n. Painful menstruation (menstrual pain), viewed as a symptom in any of...

Questions about these words

How many twelve-letter words that start with D are there?

Word.ws lists 277 twelve-letter words that start with D, plus 1,628 rare ones.

What are common twelve-letter words that start with D?

distribution, disappointed, developments, difficulties, deliberately, dramatically, differential and disciplinary.

Which of the twelve-letter words that start with D has the highest letter score?

dichotomized scores 30 points with the standard letter tile values.

Related word lists

• 12-Letter Words
• Words That Start with D
• 11-Letter Words Starting with D
• 13-Letter Words Starting with D
• Q Words Without U