Thesaurus
out to lunch
phraseSynonyms & Antonyms of out to lunch
1
slang
having or showing a very abnormal or sick state of mind
- That old fellow is out to lunch if he believes those stories about a giant creature living in the lake.
Synonyms for out to lunch
- balmy,
- barmy
- [chiefly British],
- bats,
- batty,
- bedlam,
- bonkers,
- brainsick,
- bughouse
- [slang],
- certifiable,
- crackbrained,
- cracked,
- crackers,
- crackpot,
- cranky
- [dialect],
- crazed,
- crazy,
- cuckoo,
- daffy,
- daft,
- demented,
- deranged,
- fruity
- [slang],
- gaga,
- haywire,
- insane,
- kooky
- (also kookie),
- loco
- [slang],
- loony
- (also looney),
- loony tunes
- (or looney tunes),
- lunatic,
- mad,
- maniacal
- (also maniac),
- mental,
- meshuga
- (or meshugge also meshugah or meshuggah),
- moonstruck,
- non compos mentis,
- nuts,
- nutty,
- psycho,
- psychotic,
- scatty
- [chiefly British],
- screwy,
- unbalanced,
- unhinged,
- unsound,
- wacko
- (also whacko),
- wacky
- (also whacky),
- wud
- [chiefly Scottish]
Words Related to out to lunch
- aberrant,
- delirious,
- delusional,
- delusionary,
- disordered,
- disturbed,
- neurotic,
- obsessive-compulsive,
- paranoiac
- (also paranoic),
- paranoid
- (also paranoidal),
- schizoid,
- schizophrenic,
- sociopathic
- distracted,
- distraught,
- frantic,
- frenzied,
- haywire,
- hysterical
- (also hysteric),
- raving,
- wigged-out
Phrases Synonymous with out to lunch
Near Antonyms for out to lunch
Antonyms for out to lunch
2
showing or marked by a lack of good sense or judgment
- He thought anyone who wanted to go skydiving was out to lunch.
Synonyms for out to lunch
- absurd,
- asinine,
- balmy,
- brainless,
- bubbleheaded,
- cockeyed,
- crackpot,
- crazy,
- cuckoo,
- daffy,
- daft,
- dippy,
- dotty,
- fatuous,
- featherheaded,
- fool,
- foolish,
- half-baked,
- harebrained,
- half-witted,
- inept,
- insane,
- jerky,
- kooky
- (also kookie),
- loony
- (also looney),
- lunatic,
- lunkheaded,
- mad,
- nonsensical,
- nutty,
- preposterous,
- sappy,
- screwball,
- senseless,
- silly,
- simpleminded,
- stupid,
- tomfool,
- unwise,
- wacky
- (also whacky),
- weak-minded,
- witless,
- zany
Words Related to out to lunch
- airheaded,
- birdbrained,
- boobish,
- brain-dead,
- chowderheaded,
- chuckleheaded,
- clueless,
- dense,
- dim,
- dim-witted,
- doltish,
- dopey
- (also dopy),
- dorky
- [slang],
- dull,
- dumb,
- dunderheaded,
- empty-headed,
- fatuous,
- feebleminded,
- gormless
- [chiefly British],
- idiotic
- (also idiotical),
- imbecile
- (or imbecilic),
- knuckleheaded,
- lamebrain
- (or lamebrained),
- mindless,
- moronic,
- oafish,
- obtuse,
- opaque,
- pinheaded,
- simple,
- slow,
- slow-witted,
- soft,
- softheaded,
- thoughtless,
- thick,
- thickheaded,
- unintelligent,
- vacuous,
- witless
Near Antonyms for out to lunch
Antonyms for out to lunch
Keep scrolling for more
Learn More About out to lunch
Cite this Entry
“Out to lunch.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/out%20to%20lunch. Accessed 28 Sep. 2021.
Style: MLA
MLA
Chicago
APA
Merriam-Webster
Chicago
APA
Merriam-Webster
Test Your Vocabulary
Farm Idioms Quiz
-
- What does 'poke' refer to in the expression 'pig in a poke'?
Test your vocabulary with our 10-question quiz!
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share out to lunch