Synonyms of out to lunch

out to lunch

phrase

1

as in mad

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 & Similar Words

• mad
• crazy
• nuts
• psychotic
• foolish
• around the bend
• non compos mentis
• psycho
• mental
• unreasonable
• irrational
• unsound
• off
• maniacal
• demented
• bonkers
• haywire
• daft
• unbalanced
• crackers
• strange
• nutty
• off one's head
• batty
• crazed
• ballistic
• out of one's mind
• loco
• unhinged
• obsessed
• certifiable
• eccentric
• off one's gourd
• off one's rocker
• wud
• odd
• brainsick
• deranged
• hysterical
• disturbed
• bats
• depressed
• cracked
• aberrant
• loopy
• dotty
• delirious
• oddball
• delusional
• senseless
• fey
• teched
• nuclear
• disordered
• distraught
• frantic
• delusionary
• potty
• pixilated
• distracted
• queer
• bananas
• witless
• touched
• amok
• berserk
• ape
• frenzied
• monomaniac
• fixated
• raving
• monomaniacal
• wigged-out

Antonyms & Near Antonyms

• reasonable
• sound
• balanced
• compos mentis
• sane
• rational
• clear
• wise
• normal
• uncrazy
• sensible
• lucid
• healthy
• judicious
• well-adjusted
• unneurotic

2

as in stupid

showing or marked by a lack of good sense or judgment

He thought anyone who wanted to go skydiving was out to lunch.

Synonyms & Similar Words

• stupid
• insane
• crazy
• foolish
• silly
• mad
• absurd
• weak
• lunatic
• dumb
• ridiculous
• featherheaded
• unwise
• cuckoo
• simpleminded
• senseless
• daft
• nonsensical
• zany
• idiotic
• inept
• wacky
• tomfool
• fatuous
• dippy
• balmy
• nutty
• preposterous
• loony
• jerky
• kooky
• screwball
• half-baked
• dotty
• daffy
• harebrained
• sappy
• witless
• brainless
• asinine
• crackpot
• cockeyed
• weak-minded
• fool
• simple
• thick
• unreasonable
• bubbleheaded
• soft
• lunkheaded
• dense
• irrational
• half-witted
• moronic
• unreasoning
• opaque
• mindless
• slow
• fallacious
• imbecile
• obtuse
• fatuous
• feebleminded
• clueless
• vacuous
• thoughtless
• ludicrous
• thickheaded
• doltish
• pinheaded
• dopey
• unsound
• unintelligent
• brain-dead
• boobish
• illogical
• softheaded
• chowderheaded
• dunderheaded
• witless
• surd
• laughable
• oafish
• invalid
• dorky
• dim
• farcical
• unreasoned
• nonrational
• chuckleheaded
• gormless
• airheaded
• knuckleheaded
• empty-headed
• dim-witted
• notional
• clownish
• lamebrain
• slow-witted
• dull
• ill-advised
• buffoonish
• unconsidered
• birdbrained

Antonyms & Near Antonyms

• wise
• sensible
• prudent
• sound
• bright
• reasonable
• intelligent
• clever
• sage
• valid
• smart
• sane
• logical
• rational
• sagacious
• sapient
• judicious
• brainy
• well-advised