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un-
(UN)not or opposite of
Old English (with Latin parallels) for not. Unhappy = not happy; undo = reverse a doing.
prefixLatin
Good, bad, with, againstExample words
unhappy
not happy
undo
to reverse a doing
unfair
not fair
Common Core alignment
Grades served: 4, 5
- L.4.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., telegraph, photograph, autograph).
- L.5.4bUse common, grade-appropriate Greek and Latin affixes and roots as clues to the meaning of a word (e.g., photograph, photosynthesis).
Good, bad, with, against. Roots that judge or pair things up: good, bad, together, opposed.
Browse all good, bad, with, against roots →L.4.4bL.5.4b