Words that start with Is
We found 318 words starting with Is for word games like Scrabble and Words With Friends.
List of valid words from the TWL dictionary. Each word that starts with Is prefix is ordered by length and score.
Highest scoring words starting with Is
Our high score words help you win more games by scoring the most points.
| Words | Scrabble points | Words With Friends points |
|---|---|---|
| Isozyme | 21 | 21 |
| Isthmic | 14 | 15 |
| Isopach | 14 | 15 |
| Ischium | 14 | 16 |
| Isohyet | 13 | 11 |
| Isogamy | 13 | 14 |
| Isthmus | 12 | 13 |
| Isotype | 12 | 12 |
| Isotopy | 12 | 12 |
| Isotach | 12 | 12 |
2 letter words that start with Is
- Is
3 letter words that start with Is
- Ism
4 letter words that start with Is
- Isms
- Isba
- Isle
5 letter Wordle words that start with Is
- Isbas
- Isled
- Istle
- Issue
- Issei
- Islet
- Isles
6 letter words that start with Is
- Isthmi
- Ischia
- Isopod
- Isohel
- Isomer
- Isobar
- Issued
- Isolog
- Isogon
- Isling
- Island
- Istles
- Issues
- Issuer
- Isseis
- Islets
- Isatin
7 letter words that start with Is
- Isozyme
- Isthmic
- Isopach
- Ischium
- Isohyet
- Isogamy
- Isthmus
- Isotype
- Isotopy
- Isotach
- Isonomy
- Isoform
- Isochor
- Isobath
- Ischial
- Isogriv
- Isogony
- Isogeny
- Isopods
- Isohels
- Isogram
- Isotope
- Isospin
- Isomers
- Isobars
- Isobare
- Isagoge
- Issuing
- Isologs
- Isolead
- Isogons
- Isogone
- Isodose
- Isleted
- Islands
- Issuers
- Issuant
- Isotone
- Isoline
- Isolate
- Isatins
- Isatine
8 letter words that start with Is
- Isozymic
- Isozymes
- Ischemic
- Isotypic
- Isopachs
- Isomorph
- Isocracy
- Isochime
- Isocheim
- Ischemia
- Isthmoid
- Isohyets
- Isograph
- Isthmian
- Issuably
- Isotypes
- Isotropy
- Isotherm
- Isotachs
- Isostacy
- Isospory
- Isopleth
- Isophote
- Isometry
- Isoforms
- Isochron
- Isochors
- Isochore
- Isobutyl
- Isobaths
- Isarithm
- Isotopic
- Isonomic
- Isomeric
- Isogrivs
- Isograft
- Isobaric
- Isagogic
- Isothere
- Isostasy
- Isopodan
- Isograms
- Isogonic
- Isogenic
- Issuance
- Issuable
- Isotopes
- Isotonic
- Isospins
- Isoprene
- Isolable
- Isocline
- Isobares
- Islanded
- Isatinic
- Isagoges
- Isologue
- Isoleads
- Isolated
- Isogones
- Isogonal
- Isogloss
- Islander
- Isotones
- Isolines
- Isolator
- Isolates
- Isleless
- Isatines
9 letter words that start with Is
- 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 that start with Is
- 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 that start with Is
- Isomerizing
- Isomorphism
- Isomorphous
- Isochronism
- Isoflavones
- Isoantibody
- Isotonicity
- Isografting
- Isocyanates
- Isochronous
- Isobutylene
- Isoelectric
- Isallobaric
- Isoprenoids
- Isoleucines
- Isoantigens
- Isinglasses
12 letter words that start with Is
- Isoenzymatic
- Isomorphisms
- Isothermally
- Isochronally
- Isotopically
- Isochronisms
- Isotonically
- Isodiametric
- Isobutylenes
- Isoantigenic
- Isoprenaline
- Isolationism
- Isotretinoin
- Isolationist
13 letter words that start with Is
- Isocarboxazid
- Isoalloxazine
- Isomerization
- Isochromosome
- Isochronously
- Isosmotically
- Isometrically
- Isostatically
- Isoelectronic
- Isoantibodies
- Isotonicities
- Isoproterenol
- Isoprenalines
- Isolationisms
- Isoagglutinin
- Isotretinoins
- Isolationists
14 letter words that start with Is
- Isocarboxazids
- Isoalloxazines
- Isomorphically
- Isomerizations
- Isochromosomes
- Isothiocyanate
- Isentropically
- Isoproterenols
- Isoagglutinins
15 letter words that start with Is
- Isothiocyanates
Related words
Our word list for words that end with is or words containing is helps you to find related words.
How many words start with Is?
The Scrabble dictionary contains 317 words beginning with Is. The shortest word is 2 letters long and the longest word is 15 letters long.
There are 196601 unique English words in the TWL dictionary.
Distribution of found words
| Letters | Word count |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 7 |
| 6 | 17 |
| 7 | 42 |
| 8 | 69 |
| 9 | 75 |
| 10 | 45 |
| 11 | 17 |
| 12 | 14 |
| 13 | 17 |
| 14 | 9 |
| 15 | 1 |
Frequency of words starting with letters 'I S'
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 Scrabble.
Memorize the letters from the table below.
| Word count | First letter of stem | Frequency |
|---|---|---|
| 245 | o | 77.3% |
| 14 | s | 4.4% |
| 10 | c | 3.2% |
| 9 | t | 2.8% |
| 5 | e | 1.6% |
| 2 | m | 0.6% |