Words That Start With IS

There are over 497 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

See all 3-letter IS-words

4-Letter Words Starting With IS

Common 4-letter IS-words:

isba

isit

isle

isms

isna

isos

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

isatine

ischial

islemen

isleted

ismatic

isobase

isobath

isodont

isoform

isogamy

isogony

isogram

isohyet

isomers

isotron

issuers

istanas

See all 7-letter IS-words

8-Letter Words Starting With IS

Common 8-letter IS-words:

isolated

isotopes

isabella

isagogic

ischemia

isleless

islesmen

isobaths

isocheim

isochors

isocracy

isogloss

isogones

isogonic

isolates

isometry

isonomes

isonomic

isopleth

isotones

See all 8-letter IS-words

101

9-Letter Words Starting With IS

Common 9-letter IS-words:

isolation

isagogics

ischaemia

iseikonic

islanders

islanding

isobathic

isobutane

isobutene

isochrons

isoclines

isolators

isologous

isomerize

isoprenes

isopropyl

isosmotic

isotheres

isotherms

issuances

See all 9-letter IS-words

10-Letter Words Starting With IS

Common 10-letter IS-words:

isabelline

isobutanes

isobutenes

isocheimal

isochrones

isocrymals

isoenzymic

isogenetic

isoglottic

isokontans

isometrics

isopachyte

isopiestic

isoprenoid

isopropyls

isopycnals

isoseismal

isostasies

isotropies

isotropous

See all 10-letter IS-words

11-Letter Words Starting With IS

Common 11-letter IS-words:

isabellines

isapostolic

isoaminiles

isoantigens

isobutylene

isochronise

isochronize

isochronous

isocyanates

isogeotherm

isografting

isolability

isolecithal

isomagnetic

isomerizing

isomorphism

isomorphous

isoprenoids

isoseismics

isothermals

See all 11-letter IS-words

12-Letter Words Starting With IS

Common 12-letter IS-words:

isoantigenic

isobutylenes

isochronised

isochronises

isochronisms

isochronized

isochronizes

isodiapheres

isodimorphic

isoenzymatic

isomagnetics

isometropias

isomorphisms

isoprenaline

isosthenuria

isoteniscope

isothermally

isotonically

isotopically

isoxsuprines

See all 12-letter IS-words

13-Letter Words Starting With IS

Common 13-letter IS-words:

ismaticalness

isoagglutinin

isoalloxazine

isoantibodies

isobarometric

isocarboxazid

isocheimenals

isochronizing

isochronously

isoelectronic

isolabilities

isolationisms

isomerization

isoperimeters

isosmotically

isospondylous

isostatically

isosthenurias

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

See all 14-letter IS-words

15-Letter Words Starting With IS

Common 15-letter IS-words:

ismaticalnesses

isoimmunisation

isoimmunization

isoperimetrical

See all 15-letter IS-words

497 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 497 words in the English dictionary that start with IS, and most of them are 9 letters long (101 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", "isagogics", "ischaemia", "iseikonic", "islanders".

Next to Words Start With IS

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