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

Coffee consumption has been disrupted by wacky energy drinks and elaborately sweet, calorie-rich Starbucks concoctions. —Carrie Battan, The New Yorker, 10 Mar. 2025

Face one: wacky, ideologically fevered, performatively outraged. —Matthew Continetti, National Review, 8 Mar. 2025

While exploring the fantasy worlds of Zoe and the sci-fi worlds of Mio, there is a balance of high-stakes events and wacky chaos that blends seamlessly. —Brian Mazique, Forbes, 8 Mar. 2025

Gaga has been leaning into a witchy and wacky aesthetic while promoting and preparing for Mayhem’s launch. —Robyn Merrett, StyleCaster, 6 Mar. 2025

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