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 Burnett show called upon him to design everything from evening gowns to wacky character clothing. — Maureen Lee Lenker, HollywoodReporter, 14 Sep. 2026

Cowboys at Giants Time to get wacky with the rest of the picks. — The Athletic Staff, New York Times, 9 Sep. 2026

Beer brands brewing wacky prizes and products Samuel Adams' Front Yard Beer Hall is isn't the first beer shed unveiled this summer. — Mike Snider, USA Today, 1 Sep. 2026

The actual titular story of this premiere is more of a wacky subplot. — Ben Rosenstock, Vulture, 28 Aug. 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