Words That Start With IS

81 words Words by letter Checked 9 Oct 2026

Here are 81 words that start with is, from everyday words to rare ones that are still valid in word games. Common words come first with a short meaning, then the words are grouped by length, which helps with Wordle and crossword clues.

Words starting with is: 81
Most used: issue
Shortest: ism
5 letter words: 4

Common words that start with is

#	Word	Meaning	Letters
1	issue	prepare and issue for public distribution or sale	5
2	issues	an important question that is in dispute and must be settled	6
3	island	a land mass (smaller than a continent) that is surrounded by water	6
4	issued	prepare and issue for public distribution or sale	6
5	islands	a land mass (smaller than a continent) that is surrounded by water	7
6	isolated	not close together in time	8
7	isolation	a state of separation between persons or groups	9
8	isle	a small island	4
9	issuing	prepare and issue for public distribution or sale	7
10	isolate	place or set apart	7
11	isles	a small island	5
12	islanders	an inhabitant of an island	9
13	issuance	the act of providing an item for general use or for official purposes (usually in quantity)	8
14	isolating	place or set apart	9
15	isotope	one of two or more atoms with the same atomic number but with different numbers of neutrons	7
16	isotopes	one of two or more atoms with the same atomic number but with different numbers of neutrons	8
17	issuer	an institution that issues something (securities or publications or currency etc.)	6
18	islander	an inhabitant of an island	8
19	ism	a belief (or system of beliefs) accepted as authoritative by some group or school	3
20	isolates	place or set apart	8
21	issuers	an institution that issues something (securities or publications or currency etc.)	7
22	ischemic	relating to or affected by ischemia	8
23	ischemia	local anemia in a given body part sometimes resulting from vasoconstriction or thrombosis or embolism	8
24	isthmus	a relatively narrow strip of land (with water on both sides) connecting two larger land areas	7
25	isometric	related by an isometry	9
26	islets	a small island	6
27	islet	a small island	5
28	isotopic	of or relating to or having the relation of an isotope	8
29	isolationist	of or relating to isolationism	12
30	isolationism	a policy of nonparticipation in international economic and political relations	12
31	isotropic	invariant with respect to direction	9
32	isomorphic	having similar appearance but genetically different	10
33	isms	a belief (or system of beliefs) accepted as authoritative by some group or school	4
34	isomers	a compound that exists in forms having different arrangements of atoms but the same molecular weight	7
35	isomer	a compound that exists in forms having different arrangements of atoms but the same molecular weight	6
36	isomorphism	(biology) similarity or identity of form or shape or structure	11
37	isothermal	of a process or change taking place at constant temperature	10
38	isosceles	(of a triangle) having two sides of equal length	9
39	isthmian	of or relating to or forming an isthmus	8
40	ischia	a volcanic island (part of Campania) in the Tyrrhenian Sea at the north end of the Bay of Naples	6
41	isotonic	(used of solutions) having the same or equal osmotic pressure	8
42	isoniazid	antibacterial drug (trade name Nydrazid) used to treat tuberculosis	9
43	isotherm	(meteorology) an isogram connecting points having the same temperature at a given time	8
44	isolationists	an advocate of isolationism in international affairs	13
45	isoleucine	an essential amino acid found in proteins; isomeric with leucine	10
46	isocyanate	a salt or ester of isocyanic acid	10
47	isomerization	the conversion of a compound into an isomer of itself	13
48	issuances	the act of providing an item for general use or for official purposes (usually in quantity)	9
49	isomerase	an enzyme that catalyzes its substrate to an isomeric form	9
50	isomeric	of or relating to or exhibiting isomerism	8

3 letter words that start with is

4 letter words that start with is

isle
isms

5 letter words that start with is

issue
isles
islet
issei

6 letter words that start with is

issues
island
issued
issuer
islets
isomer
ischia
isopod
isobar

7 letter words that start with is

islands
issuing
isolate
isotope
issuers
isthmus
isomers
isotype
isopods
ischium
isobars
isospin

8 letter words that start with is

isolated
issuance
isotopes
islander
isolates
ischemic
ischemia
isotopic
isthmian
isolator
isotonic
isotherm
isomeric
isoprene
issuable
isobaric
isochron
isometry
isozymes
isotropy

9 letter words that start with is

isolation
islanders
isolating
isometric
isotropic
isopropyl
isosceles
isoniazid
isostatic
isolators
issuances
isomerase
isotherms
isinglass
isobutane
isomerism
ischaemia

10 letter words that start with is

isomorphic
isothermal
isoleucine
isocyanate
isentropic
isolations

11 letter words that start with is

isomorphism
isoelectric
isochronous
isocyanates

12 letter words that start with is

isolationist
isolationism
isotopically
isomorphisms

Filter all 81 words that start with is

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All words that start with I
5 letter words that start with I
Other starts: ic, id, il, im, in, ine, ing, inter, io, ir, it

Questions people ask

How many words start with is?

This list has 81 words starting with is, all from a standard word-game dictionary and all seen in real English text.

What are common words that start with is?

issue, issues, island, issued, islands, isolated, isolation, isle.

What 5 letter words start with is?

issue, isles, islet, issei.

Source: the ENABLE word list (a public-domain dictionary used for word games), ranked by how often each word appears in English text (the open wordfreq project), with short meanings from Princeton WordNet. Offensive words are left out.