wacko

Adjective

wacko (comparative more wacko, superlative most wacko)

1. (derogatory, informal, slang) Amusingly eccentric or irrational.

   Synonyms:

   kooky, oddballish, pixilated, aberrant, abnormal, anomalous, balmy, barmy, bizarre, crackpot

Noun

wacko (plural wackos or wackoes)

1. (derogatory, slang) An amusingly eccentric or irrational person.
   • “Environmentalist wackos” — Mr. Limbaugh’s phrase — “want man to be responsible for it because they want to control your behavior,” the conservative host said on the show.2020 September 15, Michael M. Grynbaum, Tiffany Hsu, quoting Rush Limbaugh, “‘Nothing to Do With Climate Change’: Conservative Media and Trump Align on Fires”, in The New York Times, →ISSN

   Synonyms:

   kook, odd duck, weirdo, bizarro, coot, crackpot, crank, eccentric, freak, glaik

Interjection

1. (UK, dated) Hurrah!
   • "Wacko! There's a whole pile of letters for me," Jennings cried excitedly, hopping from one foot to the other.1952, Anthony Buckeridge, Jennings and Darbishire

   Synonyms:

   get in, huzzah, woo hoo, aah, alright, 'ave it, aww yeah, boo-ya, booyah, cowabunga