non-

prefix \ (ˈ)nän also , ˌnən or , ˈnən , before ˈ- stressed syllable , ˌnän also , ˌnən , before ˌ- stressed or unstressed syllable ; the variant with ə is also to be understood at pronounced entries, though not shown \

Definition of non-

1 : not : other than : reverse of : absence of
  • nontoxic
  • nonlinear
2 : of little or no consequence : unimportant : worthless
  • nonissues
  • nonsystem
3 : lacking the usual especially positive characteristics of the thing specified
  • noncelebration
  • nonart

Origin and Etymology of non-

Middle English, from Anglo-French, from Latin non not, from Old Latin noenum, from ne- not + oinom, neuter of oinos one — more at no, one


NON- Defined for English Language Learners

non-

prefix

Definition of non- for English Language Learners

  • : not


NON- Defined for Kids

non-

prefix

Definition of non- for Students

: not
  • nonfiction
  • nonstop

Law Dictionary

non-

prefix

legal Definition of non-

: not : other than : reverse of : absence of

Learn More about non-


Seen and Heard

What made you want to look up non-? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to remove or wipe out

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!