know-nothing
noun
know-noth·ing ˈnō-ˌnə-thiŋ 
1
a
: ignoramus
b
: agnostic
2
capitalized K&N : a member of a 19th century secret American political organization hostile to the political influence of recent immigrants and Roman Catholics
know-nothing adjective
Synonyms
- airhead
- birdbrain
- blockhead
- bonehead
- bubblehead
- chowderhead
- chucklehead
- clodpoll
- clodpole
- clot [British]
- cluck
- clunk
- cretin
- cuddy [British dialect]
- cuddie
- deadhead
- dim bulb [slang]
- dimwit
- dip
- dodo
- dolt
- donkey
- doofus [slang]
- dope
- dork [slang]
- dullard
- dum-dum
- dumbbell
- dumbhead
- dummkopf
- dummy
- dunce
- dunderhead
- fathead
- gander
- golem
- goof
- goon
- half-wit
- hammerhead
- hardhead
- idiot
- ignoramus
- imbecile
- jackass
- knucklehead
- lamebrain
- loggerhead [chiefly dialect]
- loon
- lump
- lunkhead
- meathead
- mome [archaic]
- moron
- mug [chiefly British]
- mutt
- natural
- nimrod [slang]
- nincompoop
- ninny
- ninnyhammer
- nit [chiefly British]
- nitwit
- noddy
- noodle
- numskull
- numbskull
- oaf
- pinhead
- prat [British]
- ratbag [chiefly Australian]
- saphead
- schlub [slang]
- shlub
- schnook [slang]
- simpleton
- stock
- stupe
- stupid
- thickhead
- turkey
- woodenhead
- yahoo
- yo-yo
See all Synonyms & Antonyms 
Word History
First Known Use
1812, in the meaning defined at sense 1a
know-nothing
noun
as in idiot
a stupid person often disparaged her coworkers as a bunch of know-nothings Synonyms & Similar Words
Relevance
- idiot
- moron
- stupid
- lunatic
- ignoramus
- imbecile
- prat
- dummy
- dolt
- dimwit
- knucklehead
- loser
- chucklehead
- fool
- dullard
- dunderhead
- bonehead
- airhead
- dunce
- numbskull
- doofus
- jackass
- mutt
- natural
- ninny
- nitwit
- lunkhead
- lamebrain
- blockhead
- cretin
- goose
- pinhead
- simpleton
- numskull
- goon
- dumbhead
- loon
- oaf
- nincompoop
- hardhead
- nimrod
- donkey
- goof
- half-wit
- stupe
- meathead
- dork
- schnook
- jerk
- schlub
- dummkopf
- chowderhead
- fathead
- clown
- ratbag
- bubblehead
- yahoo
- cluck
- deadhead
- dope
- shlub
- golem
- buffoon
- turkey
- birdbrain
- noddy
- hammerhead
- clunk
- loggerhead
- dip
- gander
- villain
- dodo
- saphead
- loony
- dumb cluck
- dumbbell
- lump
- noodle
- dum-dum
- clodpoll
- thickhead
- clodpole
- ninnyhammer
- stock
- nit
- cuddy
- mome
- dim bulb
- madman
- woodenhead
- cuddie
- skunk
- zany
- yo-yo
- booby
- clot
- snake
- boor
- nut
- creep
- scatterbrain
- mug
- gawk
- cad
- beast
- stinker
- heel
- cur
- churl
- featherbrain
Antonyms & Near Antonyms
- genius
- intellectual
- brain
- thinker
- intellect
- sage
- wizard
- whiz
- polymath
- sharpie
- Renaissance man
- sharpy