11 Letter Countable Nouns Starting with I

Browse 258 valid English 11 letter countable nouns that start with I, from Information, Independent, Institution, Improvement, Interaction, Imagination and Integration to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

Refine list...
JUMP:
Sort:

Group:

Case:

View:

JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with IA
1 words
iatrophobic
iconography
ichthyosaur
icosahedron
iconostasis
ichnography
ichnofossil
iconologist
ichthyornis
ichthyolite
iconodulist
ichthyopsid
idolization
idempotency
idioglossia
idolatrizer
ideopraxist
illustrator
illusionist
illiquidity
illuminator
illuminance
illuviation
illywhacker
improvement
imagination
implication
impeachment
imperialism
imperialist
impropriety
importation
implementer
implantable
imprecision
immobilizer
impingement
impressment
impartation
impoundment
immunoassay
impetuosity
imprecation
implicature
importunity
imperilment
imperforate
imbrication
information
independent
institution
interaction
integration
instruction
involvement
inspiration
interactive
influential
inheritance
interpreter
instability
inclination
inscription
installment
incompetent
intolerance
interviewer
inferiority
infatuation
indentation
inoculation
incarnation
Starts with IP
1 words
ipecacuanha
irrelevance
irreducible
irreverence
iridescence
irradiation
irrelevancy
ironmongery
irredentist
iridologist
irreduction
iridization
irremission
iridomyrmex
isomorphism
isethionate
isoantibody
isapostolic
isogeotherm
isomagnetic
isodiaphere
itemization
itineration
ithyphallic
ithyphallus
itacolumite

•Browse Countable Nouns by Letter (A to Z)

Select a starting letter to browse countable nouns
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.