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 actual titular story of this premiere is more of a wacky subplot. — Ben Rosenstock, Vulture, 28 Aug. 2026

In the midst of a wild and unpredictable season for the Boston Red Sox, Tuesday’s game against the Miami Marlins marked the latest wacky chapter. — Jen McCaffrey, New York Times, 26 Aug. 2026

The theater, no surprise, went with the Ibsen work that seems written expressly for this wacky MAHA moment. — Theater Critic, Los Angeles Times, 26 Aug. 2026

Edited at a wild pace, the action sequences are nerve-wracking and make for a wacky combo of scary and grisly funny. — Randy Myers, Mercury News, 26 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