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

The ride turns into a game show — Sherman and Yang are captive participants in Nwodim’s wacky ideas and commentary. —Andy Hoglund, EW.com, 20 Oct. 2024

That could be credited to its wacky outdoors fun, challenging contestants to rediscover their inner kids by building vehicles to navigate outdoor obstacle courses. —John Hopewell, Variety, 18 Oct. 2024

That’s the way the ball bounces in the wacky realm of politics. —Lance Eliot, Forbes, 15 Oct. 2024

One of the unspoken fun parts about being a pop star is people showing up to your shows with wacky signs. —Gil Kaufman, Billboard, 15 Oct. 2024

Word History

Etymology

perhaps from English dialect whacky fool

First Known Use

1930, in the meaning defined above

Kids Definition

wacky

adjective

ˈwak-ē 

wackier; wackiest

: amusing and very strange

wackily

ˈwak-ə-lē

adverb

wackiness

ˈwak-ē-nəs

noun