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 of wacky

• bizarre
• funny
• strange
• weird
• odd
• peculiar
• curious
• erratic
• eccentric
• crazy
• remarkable

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

But when a second version of the mobster from six months in the future travels back in time to blow the whole deal, things get wacky. —K. Thor Jensen, PC Magazine, 27 Mar. 2026

Intelligent, funny and just wacky enough to satisfy my own inner clown. —Patrick Albanese As Told To Courtney Crowder, Des Moines Register, 22 Mar. 2026

The free event in Cass Corridor is an annual riotous, jazzy parade that draws thousands to join in wacky and wonderful costumes and floats, while marking the start to spring. —Natalie Davies, Freep.com, 21 Mar. 2026

For example, the wacky forecast of a Dodgers-Angels World Series in 2018. —Jim Alexander, Oc Register, 21 Mar. 2026

Word History

Etymology

perhaps from English dialect whacky fool

First Known Use

1930, in the meaning defined above

Rhymes for wacky

• bacchae
• jacky
• lackey
• tacky

Kids Definition

wacky

adjective

ˈwak-ē 

wackier; wackiest

: amusing and very strange

wackily

ˈwak-ə-lē

adverb

wackiness

ˈwak-ē-nəs

noun