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

The film artfully blends wacky gags and references with resonant themes that affect our world, including discrimination and unconscious bias, satisfying viewers of all ages. —James Mercadante, Entertainment Weekly, 20 Jan. 2026

Seattle rallied from a 16-point deficit in the fourth quarter for a wacky 38-37 overtime win on a 2-point conversion in Week 16. —Rob Maaddi, Baltimore Sun, 19 Jan. 2026

But softening in the presence of a beautiful temp agent (Sondra Locke), and amicably getting along with his mother’s wacky cast of friends, the Pied Piper of Rodent Cinema leaves an increasingly likable impression. —Alison Foreman, IndieWire, 16 Jan. 2026

He’s been linked to potential NFL head-coaching jobs in a cycle that’s already been wacky. —Ryan Gaydos, FOXNews.com, 13 Jan. 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