Words That Start with IS

2-letter words that start with IS

• is2v. Used in phrases with existential there (also here and where) when the...

3-letter words that start with IS

• ish6adv. Somewhat, reasonably, fairly.
• ism5n. An ideology, system of thought, or practice that can be described by a...
• iso3n. Quarantine measures in order to mitigate the spread of communicable...
• ist3n. A practitioner or supporter of an ism.
• isu3n. An individual seat in the loft-like balcony of a sumo arena.

4-letter words that start with IS

• isha7n. The evening/night Islamic prayer.
• isis4n. Any coral of the genus Isis, or family Isididae, composed of joints of...
• isle4n. An island, usually very small. Compare with islet.
• ison4n. Accompanying drone in Byzantine music.

5-letter words that start with IS

• ishan8n. Title of Sufi leaders in Central Asia.
• islay8n. Prunus ilicifolia, a traditional Native American food plant in southern...
• islet5n. A small island.
• issei5n. A member of the first generation of Japanese immigrants to North...
• issue5n. The outflow of a bodily fluid, particularly (now rare) in abnormal...

6-letter words that start with IS

• isabel8n. Synonym of isabella.
• isekai10n. A genre of Japanese fiction involving everyday people transported to...
• island7n. A contiguous area of land, smaller than a continent, totally surrounded...
• isobar8n. A line drawn on a map or chart connecting places of equal or constant...
• isomer8n. Any of two or more compounds with the same molecular formula but with...
• isopod9n. Any of very many crustaceans, of the order Isopoda, that have a...
• issuer6n. One who issues, emits, or publishes.

7-letter words that start with IS

• ischial12adj. Pertaining to the ischium.
• ischium14n. The lowest of the three bones that make up each side of the pelvis.
• isoamyl12n. The organic radical derived from isoamyl alcohol; 3-methyl butyl.
• isoform12n. Any of several different forms of the same protein, arising from either...
• isolate7v. To set apart or cut off from others.
• isospin9n. A quantum number or symmetry related to the strong interaction and...
• isotope9n. Any of two or more forms of an element where the atoms have the same...
• isotopy12n. A form of homotopy that is always an embedding.
• isotype12n. A marker corresponding to an antigen found in all members of a subclass...
• isozyme21n. Synonym of isoenzyme.
• issuing8n. The act by which something is issued.
• isthmus12n. A narrow strip of land, bordered on both sides by water, and connecting...

8-letter words that start with IS

• isabella10n. A pale grey-yellow, fawn, cream-brown or parchment colour.
• isabelle10n. Synonym of isabella.
• ischemia15n. Local disturbance in blood circulation due to mechanical obstruction of...
• ischemic17adj. Characteristic of, or accompanied by, ischemia — localised anaemia due...
• islander9n. A person who lives on an island.
• isobaric12adj. Having the same pressures, masses, or densities.
• isobutyl13n. The univalent hydrocarbon radical derived from isobutanol.
• isochron13n. A line on a chart linking rock of the same age (as determined from...
• isogenic11adj. Having the same genes.
• isolated9adj. Placed or standing apart or alone; in isolation.
• isolator8n. An electrical device that detects short circuits and isolates them.
• isomeric12adj. Being an isomer.
• isometry13n. A function between metric spaces (or on a single metric space) having...
• isoprene10n. An unsaturated hydrocarbon, C₅H₈, that is readily polymerized; natural...
• isostasy11n. The state of balance or pressure equilibrium thought to exist within...
• isotherm13n. A line on a graph or chart, such as a weather map, along which all the...
• isotonic10adj. Having the same osmotic pressure.
• isotopic12adj. Of or pertaining to isotopes.
• isotropy13n. The property of being identical, or having the same physical...
• issuable10adj. Leading to, producing, or relating to, an issue; capable of being made...
• issuance10n. The act of issuing, or giving out.
• isthmian13adj. Of or pertaining to an isthmus, especially to the Isthmus of Corinth in...

9-letter words that start with IS

• ischaemic18adj. British English spelling of ischemic.
• isinglass10n. A form of gelatin obtained from the air bladder of the sturgeon and...
• islanding11n. The condition of a distributed generation (DG) generator continuing to...
• isobutane11n. A hydrocarbon, a particular isomer of C₄H₁₀ found in natural gas.
• isobutene11n. The unsaturated hydrocarbon methylpropene, (CH₃)₂C=CH₂; used in the...
• isochoric16adj. Having the same volume.
• isochrone14n. An isoline on a map or chart connecting points that have the same value...
• isoenzyme23n. Any of a group of enzymes that catalyze the same reaction but have...
• isolating10adj. Having low morpheme per word ratio and no inflectional morphemes.
• isolation9n. The state of being isolated, detached, or separated; the state of being...
• isomerase11n. Any enzyme which catalyzes the conversion of one isomeric form of a...
• isomerism13n. The phenomenon of the existence of isomers - the existence of different...
• isomerize20v. To convert a compound into a different isomeric form.
• isometric13adj. Of or exhibiting equality in dimensions.
• isoniazid19n. A synthetic, crystalline compound, C₆H₇N₃O, (trademarks Hydra, Hyzyd...
• isopropyl16n. The univalent organic radical (CH₃)₂CH-.
• isosceles11adj. Having (at least) two sides of equal length, used especially of a...
• isostatic11n. A line of constant stress.
• isosteric11adj. Of or pertaining to isosteres.
• isotropic13adj. Having properties that are identical in all directions; exhibiting...

10-letter words that start with IS

• isentropic14adj. Having a constant entropy.
• islandwide15adj. Extending throughout an island.
• isobutanol12n. The aliphatic alcohol 2-methyl-1-propanol that is used as a solvent and...
• isochronic17adj. Isochronal.
• isocitrate12n. Any salt or ester of isocitric acid.
• isocyanate15n. The univalent radical -N=C=O (tautomeric with cyanate), and any of its...
• isocyanide16n. The isomer HN⁺C⁻ of hydrocyanic acid HCN.
• isoflavone16n. Any of a class of polyphenolic phytoestrogens found in soybeans and...
• isoflurane13n. A halogenated ether, 2-chloro-2-(difluoromethoxy)-1,1,1-trifluoroethane...
• isokinetic16adj. Relating to the force that a muscle applies during a limb movement at...
• isoleucine12n. An essential amino acid, C₆H₁₃NO₂, isomeric with leucine, found in most...
• isomerized22adj. Converted from one isomer to another.
• isometrics14n. Isometric exercises.
• isomorphic19adj. Related by an isomorphism; having a structure-preserving one-to-one...
• isoprenoid13n. Any compound formally derived from one or more isoprene units.
• isosorbide13n. A bicyclic derivative of furan whose nitrates are used as vasodilators.
• isothermal15adj. Of or pertaining to a process that takes place at constant temperature.
• isovaleric15adj. Of or pertaining to isovaleric acid or its derivatives.

11-letter words that start with 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...
• isomorphism20n. Similarity of form.
• isomorphous18adj. Of, relating to, or exhibiting isomorphism.
• isopropanol15n. The aliphatic alcohol 2-propanol; isopropyl alcohol.

12-letter words that start with IS

• isolationism14n. A national (or group) policy of non-interaction with other nations (or...
• isolationist12adj. Relating to, or supporting, isolationism.
• isoquinoline21n. An isomer of quinoline, many of whose derivatives occur as alkaloids...
• isothermally20adv. In an isothermal manner; at constant temperature.
• isotopically19adv. With regard to isotopes.
• isotretinoin12n. A cis isomer of retinoic acid that is a synthetic derivative of vitamin...

13-letter words that start with IS

• isoelectronic17adj. Having the same electronic configuration, although consisting of...
• isomerisation15n. The conversion of a compound into a different isomeric form.
• isomerization24n. The conversion of a compound into a different isomeric form.
• isometrically20adv. In an isometric manner.
• isoperimetric19adj. Having the same perimeter; applied to the problem of finding a plane...
• isoproterenol15n. Synonym of isoprenaline.
• isostatically18adv. In an isostatic manner.
• isostructural15adj. Having the same, or a corresponding, structure.
• isotropically20adv. In an isotropic manner; so as to exhibit the same properties or...

14-letter words that start with IS

• isothiocyanate22n. Any salt or ester of the hypothetical isothiocyanic acid; or the -NCS...

Questions about these words

How many words that start with IS are there?

Word.ws lists 117 words that start with IS, plus 1,186 rare ones.

What are common words that start with IS?

is, issue, island, isis, isolated, isolation, isle and iso.

Which of the words that start with IS has the highest letter score?

isomerization scores 24 points with the standard letter tile values.

Related word lists

• Words That Start with I
• Words Ending in IS
• Q Words Without U