wacky

adjective

ˈwa-kē 

variants or less commonly whacky

wackier also whackier; wackiest also whackiest

: absurdly or amusingly eccentric or irrational

wacky ideas

a wacky comedian

wackily

ˈwa-kə-lē 

adverb

wackiness

ˈwa-kē-nəs 

noun

Synonyms

• bizarre
• bizarro
• cranky
• crazy
• curious
• eccentric
• erratic
• far-out
• funky
• funny
• kinky
• kooky
• kookie
• odd
• off-kilter
• off-the-wall
• offbeat
• out-of-the-way
• outlandish
• outré
• peculiar
• quaint
• queer
• queerish
• quirky
• remarkable
• rum [chiefly British]
• screwy
• spaced-out
• strange
• way-out
• weird
• weirdo
• wild

Examples of wacky in a Sentence

My wacky aunt takes a swim before the lake freezes every winter.

the wacky world of his imagination

Recent Examples on the Web

The most high-profile example of that merchandise push, wacky popcorn tins are a unique type of tchotchke that also means more revenue — most buckets cost around $20 or $25, with more expensive versions costing up to $50 or even $65. —Angela Yang, NBC News, 23 June 2024

Piersall did play four more years for the Los Angeles Angels, but thanks to his antics, June 23, 1963 will always remain my wackiest, coolest memory of my dad and I at the ballpark. —Sun Sentinel Editorial Board, Sun Sentinel, 21 June 2024

A little silly, a little wacky, a little sarcastic and playful. —EW.com, 12 June 2024

This will always be monumental to me; their fingerprints on the Smiths are wacky, generous and irreplaceable. —Francesca Sloane, Los Angeles Times, 11 June 2024

Word History

Etymology

perhaps from English dialect whacky fool

First Known Use

1930, in the meaning defined above

Kids Definition

wacky

adjective

ˈwak-ē 

wackier; wackiest

: amusing and very strange

wackily

ˈwak-ə-lē

adverb

wackiness

ˈwak-ē-nəs

noun