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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. adj. Slang Eccentric or irrational: a wacky person.
  2. adj. Slang Crazy; silly: a wacky outfit.

Wiktionary

  1. adj. Of a person or their behaviour, zany.

WordNet 3.0

  1. adj. informal or slang terms for mentally irregular
  2. adj. ludicrous, foolish

Etymologies

  1. Variant of whacky, probably from the phrase out of whack; see whack.

Examples

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Lists

These user-created lists contain the word ‘wacky’.

Comments

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  • yarb This word has come to connote self-conscious, court-jester-style buffoonery, embarrassing to all concerned.

    A good example of the older, more straightforward sense of 'weird', 'absurd' or 'unusual' is the 1974 Dr Seuss book "Wacky Wednesday". Nov 16, 2007

‘wacky’ has been looked up 1241 times, added to 16 lists, commented on 1 time, and has a Scrabble score of 17.