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Showing results for lunatic. Search instead for lunatisch.
Definitions

lunatic

[loo-nuh-tik] / ˈlu nə tɪk /
ADJECTIVE
crazy, mad
Synonyms
STRONGEST
crazed cuckoo maniacal
STRONG
absurd bananas irrational maniac stupid whacko zany
WEAK
baked balmy bonkers cracked daft demented deranged dippy flaky flipped-out foolish freaked-out fried half-baked idiotic insane kooky loco nonsensical nutty preposterous psyched-out screwy unsound
Antonyms
STRONG
logical rational reasonable sensible
WEAK
sane
NOUN
person who is crazy
Synonyms
STRONGEST
maniac psychopath psychotic
STRONG
crackpot crank cuckoo demoniac flake fruitcake kook loon mad person neurotic nut scatterbrain
WEAK
lamebrain sociopath

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

That is a deliberate choice, says Tracy, because Teddy is not -- or at least not just -- a lunatic.

From Barron's • Mar. 1, 2026

I’m not an actor, I like working at night, and I’m not going to let you bully me into becoming a Type A lunatic.

From Los Angeles Times • Nov. 19, 2025

The Macfadyen performance is not of a raving lunatic.

From The Wall Street Journal • Nov. 6, 2025

“It’s easy to quickly and thoughtless write this off as the manifesto of a lunatic, in order to avoid facing some of the uncomfortable problems it identifies,” Mangione wrote.

From Los Angeles Times • Dec. 11, 2024

“The lunatic part or the perfect English part?”

From "Aristotle and Dante Discover the Secrets of the Universe" by Benjamin Alire Saenz

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.