Find Synonyms

wacko Synonyms

Another word for wacko

Choosing another word for wacko depends on context, so the 16 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• noun (Context 1)

A person who is eccentric, irrational, or mentally unstable.

Usage Example

"The late-night radio host was known for entertaining calls from every crank and weirdo in the city."

Strongest
weirdo
nutcase
crackpot
Strong
lunatic
kook
oddball
crank
eccentric
madman

• adjective (Context 2)

Extremely eccentric, irrational, or mentally unstable; crazy.

Usage Example

"He came up with some pretty wacky conspiracy theories to explain the sudden power outage."

Strongest
wacky
crazy
loony
nutty
Strong
kooky
bizarre
crackpot
unhinged
eccentric

Opposites of wacko

The opposite of wacko shifts depending on context. Common opposites include:

sane
sensible
rational
level-headed
reasonable
normal
realist
pragmatist
See all opposites of wacko

• Nearby Words

wackadoodle
wackily
wackiness
wacko
wacky
waco
wad

Cite this Entry

Wordmom. (2026). Synonyms for Wacko. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/wacko
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