Words That Start With IS

There are over 514 words that begin with IS in English. From 2-letter words to 15-letter entries, find IS-words grouped and sortable by length below, all valid in Scrabble, Wordle, and Words With Friends. You can also see five letter words starting with IS.

2-Letter Words Starting With IS

Short high-frequency IS-words:

3-Letter Words Starting With IS

Short high-frequency IS-words:

ish

ism

iso

ist

See all 3-letter IS-words

4-Letter Words Starting With IS

Common 4-letter IS-words:

isba

isit

isle

isms

isna

isnt

isos

ists

See all 4-letter IS-words

5-Letter Words Starting With IS

Common 5-letter IS-words:

issue

isbas

ishes

isled

isles

islet

isnae

issei

istle

See all 5-letter IS-words

6-Letter Words Starting With IS

Common 6-letter IS-words:

issues

island

issued

isabel

isatin

ischia

islets

isling

isobar

isogon

isohel

isolex

isolog

isomer

isopod

isseis

issuer

istana

isthmi

istles

See all 6-letter IS-words

7-Letter Words Starting With IS

Common 7-letter IS-words:

islands

isotope

issuing

isagoge

isatins

ischial

isoamyl

isobare

isodoma

isoetes

isoform

isogeny

isogons

isogony

isogram

isohyet

isopach

isotone

isotopy

isotron

See all 7-letter IS-words

8-Letter Words Starting With IS

Common 8-letter IS-words:

isolated

isotopes

isabella

isagogic

ischemia

ischemic

isocheim

isochron

isocryme

isogenic

isogonic

isograph

isogrivs

isologue

isonomes

isopachs

isophote

isostasy

isotypes

issuably

See all 8-letter IS-words

102

9-Letter Words Starting With IS

Common 9-letter IS-words:

isolation

isallobar

ischaemia

ischemias

islomania

isobutane

isochasms

isoclines

isocrymal

isocyclic

isogamete

isolative

isophotes

isopropyl

isopycnal

isosceles

isosmotic

isostatic

isotheral

isotropic

See all 9-letter IS-words

10-Letter Words Starting With IS

Common 10-letter IS-words:

isabelline

ischaemias

islomanias

isobarisms

isocyanide

isodynamic

isoenzymes

isogametes

isoglottal

isomerases

isomerised

isometrics

isomorphic

isonitrile

isopterans

isospories

isosporous

isothermal

isotropies

ispaghulas

See all 10-letter IS-words

11-Letter Words Starting With IS

Common 11-letter IS-words:

isabellines

isinglasses

isoaminiles

isoantibody

isochronise

isochronous

isocyanides

isoelectric

isogeotherm

isografting

isoleucines

isomagnetic

isomerising

isometrical

isomorphism

isopolities

isoseismals

isothermals

isotropisms

isoxsuprine

See all 11-letter IS-words

12-Letter Words Starting With IS

Common 12-letter IS-words:

isethionates

isoantigenic

isocheimenal

isochromatic

isochronized

isodiametric

isodiapheres

isodimorphic

isoflavonoid

isogeotherms

isolationism

isolationist

isoperimetry

isoprenaline

isostemonous

isosthenuria

isoteniscope

isotonically

isotopically

isotretinoin

See all 12-letter IS-words

13-Letter Words Starting With IS

Common 13-letter IS-words:

ischiorrhogic

isoalloxazine

isochromosome

isochronising

isodimorphism

isodimorphous

isoelectronic

isoflavonoids

isogeothermic

isolabilities

isolationisms

isolationists

isomerisation

isometrically

isoperimeters

isoprenalines

isoproterenol

isosmotically

isoteniscopes

isotropically

See all 13-letter IS-words

14-Letter Words Starting With IS

Common 14-letter IS-words:

isentropically

isoagglutinins

isoalloxazines

isocarboxazids

isochromosomes

isodiametrical

isodimorphisms

isogeothermals

isogeothermics

isomerisations

isomerizations

isomorphically

isoperimetries

isopiestically

isoproterenols

isothiocyanate

See all 14-letter IS-words

15-Letter Words Starting With IS

Common 15-letter IS-words:

ismaticalnesses

isoimmunisation

isoimmunization

isoperimetrical

isothiocyanates

See all 15-letter IS-words

514 Common Words Starting with IS

Most Common Length

Avg Scrabble Score

(out of 35)

Most Common Ending

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What is the highest scoring word in
Scrabble that starts with IS?

35 Points

The highest scoring word in Scrabble that starts with IS is isocarboxazids with a total of 35 points.

I 1

S 1

O 1

C 3

A 1

R 1

B 3

O 1

X 8

A 1

Z 10

I 1

D 2

S 1

Words that begin with IS are commonly used for word games like Scrabble and Words with Friends. This list will help you to find the top scoring words to beat the opponent. You can also find a list of all words that end in IS and words with IS. Try our five letter words starting with IS page if you’re playing Wordle-like games or use the New York Times Wordle Solver for finding the NYT Wordle daily answer.

FAQ Words That Start With IS

How many words starting with IS are in the English dictionary?

There are 514 words in the English dictionary that start with IS, and most of them are 9 letters long (102 words of that length).
What's the longest word starting with IS?

The longest word starting with IS is "isoimmunisation" at 15 letters long. If you're looking for a more everyday word, "isolation" is the longest common word starting with IS.
Are there any rare words starting with IS worth more in Scrabble?

Yes. Uncommon words like "isocarboxazid", "isoalloxazine", "isocarboxazids", "isoimmunization" start with IS and can score big thanks to their unusual letters. "isocarboxazids" is worth 35 points in Scrabble before any bonus tiles.
What are the most common words starting with IS?

Most words starting with IS are 9 letters long, including everyday words like "isolation", "isallobar", "ischaemia", "ischemias", "islomania".

Next to Words Start With IS

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