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

Amelia Earhart Park in Hialeah is embracing all things weird and wacky with this holiday attraction, now in its second year. — Madeleine Marr, Miami Herald, 13 Nov. 2026

Other historical objects Will Dunn shared include Mary Anderson’s ice axe, catalogues and Freezer Fred, the wonderfully wacky thermoplastic test dummy that helped improve the Magma sleeping bag. — Tonya Blazio-Licorish, Footwear News, 6 Nov. 2026

Some of them are considered good, some of them are considered really wacky. — Fiction Non Fiction, Literary Hub, 5 Nov. 2026

The singer-songwriter’s seventh album is their wackiest and funniest to date, with a madcap gleam coursing through its synth-pop portraits of lovable weirdos and suburban dread. — Zach Schonfeld, Pitchfork, 26 Oct. 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