Countable Nouns That Start with DEF

Explore 97 verified English countable nouns starting with DEF, including Defense, Defeat, Definition, Deficit, Default, Defensive and Definite. Browse these count nouns with singular and plural forms by length below, or review singular and plural count rules in our noun grammar guide.

Refine list...
JUMP:
Sort:

Group:

Case:

View:

JUMP TO:
Select any word to view available definitions & photosSelect any word for details
Starts with DEFA
8 words
default
defamation
defacement
defaulter
defamer
defacer
defalcation
defalcator
Starts with DEFE
24 words
defense
defeat
defensive
defect
defendant
defender
defective
defection
deferral
defenseman
defector
deferment
defecation
defeatist
defenestration
defeater
defeasance
deferent
defectionist
defervescence
defecator
deferrer
defeminization
defensative
Starts with DEFI
19 words
definition
deficit
definite
definitive
deficiency
defiance
defile
defibrillator
defilement
definer
defibrillation
defier
defilade
defiler
definiendum
definiens
defibrination
definement
defiliation
Starts with DEFL
15 words
deflation
deflection
deflector
deflator
defloration
deflagration
deflationist
deflowerer
defluxion
deflocculation
deflocculant
deflagrator
deflux
deflexure
deflectionization
Starts with DEFO
15 words
deformity
deformation
defoliant
defoliation
defogger
defocus
deformability
defoamer
deforester
defoliator
deformer
deforcement
deforcer
deforciant
deforciation
Starts with DEFR
12 words
defrost
defroster
defrag
defragmenter
defragmentation
defrauder
defrayal
defrayment
defragger
defraudment
defrayer
defraudation
Starts with DEFT
1 words
defterdar
Starts with DEFU
3 words
defuser
defunctionalization
defunction

•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.