prefix

un-

un-, not

He was unhappy with the result.

He was unhappy with the result.

Can you please unlock the door?

Can you please unlock the door?

un- + ((adjective)) not (adjective) He was unhappy with the result.

un- + ((verb)) reverse of (verb) Can you please unlock the door?

Antonyms (other negative prefixes): in-, im-, il-, ir-, dis-, non-

From Old English 'un-', meaning 'not'. It is a common prefix across Germanic languages.

'Un-' is one of the most common negative prefixes. It attaches to adjectives to mean 'not' and to verbs to mean 'the reverse of'.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.