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
• eccentric
• strange
• weird
• funny
• odd
• peculiar
• crazy
• curious

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 whole this is very slapstick and irreverent, and the story is advanced almost exclusively by wacky deus ex machinas. —James Folta, Literary Hub, 10 Sep. 2025

Deliver packages in a world where everything’s out to kill you, escape wild hazards and enemies, fight back using wacky power-ups and choose from a variety of perks to improve your chances of survival. —David Jagneaux, Forbes.com, 10 Sep. 2025

The wacky tube doesn’t really care for Donald and knows that Donald gets frustrated. —Jazz Tangcay, Variety, 9 Sep. 2025

This is one of those games where a Nik Bonitto pick-6 or something wacky could put the scrappy Titans away. —Joe Nguyen, Denver Post, 7 Sep. 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