noun, verb, slang ·Moderate ·College level

Definitions

Noun

1. 1
   A bad smell. Australia, Ireland, New-Zealand, UK, informal

   "Whew, there's a bit of a niff in here. Is that your socks?"

2. 2
   an unpleasant smell wordnet
3. 3
   A sulk or sullen mood. Cornwall

   "'I don't see you need to get in such a niff,' said Katie."

Verb

1. 1
   To smell bad; to stink. informal

Synonyms

All synonyms

humnosesorepongreeksmellstench

Example

More examples

"Whew, there's a bit of a niff in here. Is that your socks?"

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.