Synonyms of nincompoop

nincompoop

noun

ˈnin-kəm-ˌpüp 

1

as in lunatic

a person who lacks good sense or judgment

quit acting like a nincompoop, because I know you are smarter than that

Synonyms & Similar Words

• lunatic
• fool
• moron
• idiot
• goose
• maniac
• dingbat
• mooncalf
• nut
• nitwit
• ninny
• nutcase
• jackass
• ding-dong
• turkey
• half-wit
• doofus
• cuckoo
• dipstick
• git
• loser
• simpleton
• booby
• monkey
• ninnyhammer
• ding-a-ling
• featherhead
• berk
• nit
• simp
• daredevil
• charlie
• numskull
• know-nothing
• dummy
• imbecile
• dolt
• ignoramus
• donkey
• knucklehead
• dunce
• pinhead
• yo-yo
• madman
• birdbrain
• blockhead
• airhead
• scatterbrain
• gander
• dumbbell
• character
• goon
• schnook
• dope
• laughingstock
• crackpot
• dork
• fathead
• chump
• dupe
• stock
• mockery
• schlub
• butt
• dodo
• schlemiel
• weirdo
• featherbrain
• screwball
• codger
• kook
• crank
• schlump
• oddball
• crackbrain

Antonyms & Near Antonyms

• brain
• sage
• genius
• thinker

2

as in moron

a stupid person

who wants a nincompoop as a business partner?

Synonyms & Similar Words

• moron
• idiot
• stupid
• numskull
• know-nothing
• imbecile
• prat
• cretin
• dolt
• fool
• ignoramus
• dummy
• loser
• dimwit
• bonehead
• bubblehead
• knucklehead
• nitwit
• dunce
• pinhead
• stupe
• dunderhead
• oaf
• lunkhead
• ninny
• birdbrain
• chucklehead
• dullard
• mutt
• blockhead
• airhead
• jackass
• donkey
• meathead
• dumbhead
• chowderhead
• half-wit
• gander
• dum-dum
• noodle
• dumbbell
• saphead
• doofus
• hardhead
• goon
• deadhead
• schnook
• turkey
• dope
• loon
• simpleton
• jerk
• fathead
• dork
• golem
• ratbag
• ninnyhammer
• hammerhead
• nimrod
• yahoo
• dummkopf
• cluck
• noddy
• dip
• goof
• lamebrain
• clodpoll
• schlub
• stock
• clown
• mome
• dim bulb
• woodenhead
• buffoon
• dodo
• nit
• goose
• loggerhead
• cuddy
• villain
• dumb cluck
• clunk
• clot
• lump
• skunk
• madman
• loony
• yo-yo
• thickhead
• booby
• mug
• scatterbrain
• zany
• nut
• snake
• creep
• cad
• gawk
• heel
• boor
• beast
• featherbrain
• churl
• stinker
• cur

Antonyms & Near Antonyms

• brain
• genius
• sage
• intellect
• intellectual
• thinker
• wizard
• whiz
• polymath
• Renaissance man
• sharpie

Example Sentences

Recent Examples of nincompoop

Everyone in the imperium knows the emperor is a nincompoop—and yet no one wants to go out on a limb to criticize him. — Joshua Rothman, New Yorker, 14 Oct. 2025

Paired alongside Williams and Dunst’s airheads, Ferrell plays a nincompoop Bob Woodward, but the role doesn’t give him much of a chance to cut loose. — Tim Grierson, Vulture, 4 Feb. 2025

Being a nature nincompoop may have saved him from a grisly fate. — Kevin Spear, Orlando Sentinel, 19 Jan. 2025

As Jimmy, the chief pushover, Jimmy, Norman makes for a sympathetic enough nincompoop. — Chris Willman, Variety, 16 June 2024

Only one police officer pops up there, a smiley nincompoop who sucks down children’s birthday cake from behind a desk and shrugs his way through conversation. — Hillary Kelly, The Atlantic, 11 Mar. 2024

Somebody else could have gotten away with doing half as much, but Ruffalo proves a compound nincompoop. — Wesley Morris, New York Times, 18 Feb. 2024