Words that start with Is

We found 318 words starting with Is for word games like Scrabble and Words With Friends.

Highest scoring words starting with Is prefix

WordsScrabble pointsWords With Friends points
Isozyme2121
Isthmic1415
Isopach1415
Ischium1416
Isohyet1311
Isogamy1314
Isthmus1213
Isotype1212
Isotopy1212
Isotach1212

2 letter words

3 letter words

4 letter words

5 letter Wordle words

6 letter words

7 letter words

8 letter words

9 letter words

  • Isoenzyme
  • Isomerize
  • Isoniazid
  • Isopycnic
  • Isocyclic
  • Ischiadic
  • Isopropyl
  • Isomorphs
  • Isochoric
  • Isochimes
  • Isocheims
  • Isobathic
  • Ischiatic
  • Ischemias
  • Ischaemia
  • Isohyetal
  • Isographs
  • Iseikonic
  • Isthmuses
  • Isthmians
  • Isotherms
  • Isopleths
  • Isophotes
  • Isophotal
  • Isochrons
  • Isochrone
  • Isochores
  • Isobutyls
  • Isarithms
  • Isotropic
  • Isotactic
  • Isosmotic
  • Isometric
  • Isomerism
  • Isografts
  • Isoclinic
  • Isobarism
  • Iseikonia
  • Isagogics
  • Isotheres
  • Isotheral
  • Isopodans
  • Isogonics
  • Isogeneic
  • Isogamous
  • Isogamies
  • Isogamete
  • Issuances
  • Isotopies
  • Isosteric
  • Isostatic
  • Isosceles
  • Isoprenes
  • Isooctane
  • Isonomies
  • Isomerous
  • Isomerase
  • Isoclines
  • Isoclinal
  • Isobutene
  • Isobutane
  • Islanding
  • Isallobar
  • Isologues
  • Isologous
  • Isolating
  • Isogonies
  • Isogonals
  • Isogenous
  • Isogenies
  • Islanders
  • Isinglass
  • Issueless
  • Isolators
  • Isolation

10 letter words

  • Isoenzymic
  • Isoenzymes
  • Isomerized
  • Isomerizes
  • Isoniazids
  • Isomorphic
  • Isopropyls
  • Isoplethic
  • Ischaemias
  • Isoflavone
  • Isothermal
  • Isografted
  • Isogametic
  • Isocyanate
  • Isochrones
  • Isochronal
  • Isopiestic
  • Isometrics
  • Isomerisms
  • Isocracies
  • Isoclinics
  • Isocaloric
  • Isobarisms
  • Isentropic
  • Iseikonias
  • Isoprenoid
  • Isoglossic
  • Isogametes
  • Isotropies
  • Isostacies
  • Isospories
  • Isooctanes
  • Isometries
  • Isomerases
  • Isoleucine
  • Isolatable
  • Isoclinals
  • Isobutenes
  • Isobutanes
  • Isallobars
  • Isoglosses
  • Isoglossal
  • Isoantigen
  • Isostasies
  • Isolations

11 letter words

  • Isomerizing
  • Isomorphism
  • Isomorphous
  • Isochronism
  • Isoflavones
  • Isoantibody
  • Isotonicity
  • Isografting
  • Isocyanates
  • Isochronous
  • Isobutylene
  • Isoelectric
  • Isallobaric
  • Isoprenoids
  • Isoleucines
  • Isoantigens
  • Isinglasses

12 letter words

  • Isoenzymatic
  • Isomorphisms
  • Isothermally
  • Isochronally
  • Isotopically
  • Isochronisms
  • Isotonically
  • Isodiametric
  • Isobutylenes
  • Isoantigenic
  • Isoprenaline
  • Isolationism
  • Isotretinoin
  • Isolationist

13 letter words

  • Isocarboxazid
  • Isoalloxazine
  • Isomerization
  • Isochromosome
  • Isochronously
  • Isosmotically
  • Isometrically
  • Isostatically
  • Isoelectronic
  • Isoantibodies
  • Isotonicities
  • Isoproterenol
  • Isoprenalines
  • Isolationisms
  • Isoagglutinin
  • Isotretinoins
  • Isolationists

14 letter words

  • Isocarboxazids
  • Isoalloxazines
  • Isomorphically
  • Isomerizations
  • Isochromosomes
  • Isothiocyanate
  • Isentropically
  • Isoproterenols
  • Isoagglutinins

15 letter words

  • Isothiocyanates

How many words start with Is?

There are a total of 317 words beginning with Is. The shortest word is 2 letters long and the longest word is 15 letters long.

The TWL dictionary contains 196601 unique English words.

Distribution of found words

LettersWord count
21
31
43
57
617
742
869
975
1045
1117
1214
1317
149
151

Most common letters after the prefix Is-

What are the most common first letters of stems that begin with Is? We analyzed letter frequency of the first letters following this prefix. Our findings help you make strategic tile placement decisions in word games.

Memorize the letters from the table below.

Word countFirst letter of stemFrequency
245o77.3%
14s4.4%
10c3.2%
9t2.8%
5e1.6%
2m0.6%

Words with the same prefixes

Frequency of words starting with letters 'I S'