Kooky

//ˈkuːki// adj, noun, slang

adj, noun, slang ·Common ·High school level

Definitions

Noun
  1. 1
    Alternative form of kookie (“kookaburra”). alt-of, alternative, childish
Adjective
  1. 1
    Eccentric, strange, or foolish; crazy or insane; kookish. slang

    "His kooky behavior seemed charming at first, but soon got on our nerves."

  2. 2
    Behaving like a kook (a person with poor style or skill); kook-like.

    "From Kook to Classic A new appreciation for the grace (and glory) of longboardsmanship changed the image of longboarding from kooky to classic. Longboarding became a class-act and the classic essence of the surfing lifestyle."

Adjective
  1. 1
    informal or slang terms for mentally irregular wordnet

Synonyms

All synonyms
bonkersnutsoutlandishwackyaberrantabnormal

Example

More examples

"Tom's a bit kooky, but he's a good guy."

Etymology

Etymology 1

From kook + -y.

Etymology 2

Clipping of kookaburra + -y.

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