adj, noun, slang ·Common ·High school level

Definitions

Noun

1. 1
   plural of bonker form-of, plural

Adjective

1. 1
   Mad; crazy. British, especially, informal

   "[A]nd we should remind ourselves that it is absolutely bonkers that we elect judges at all; that system is used almost nowhere else on earth[.]"

Adjective

1. 1
   informal or slang terms for mentally irregular wordnet

Synonyms

All synonyms

insanearound bendaround the bendbakedbalmybalmy

Example

More examples

"It is bonkers to go out in this weather."

Etymology

Unknown. Perhaps from bonk (a blow or punch on the head), perhaps related to earlier bonce.

Related phrases

go bonkers

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