an ignorant or totally uninformed person; ignoramus.
an agnostic.
(initial capital letters)U.S. History. a member of a political party (American party, or Know-Noth·ing party ) prominent from 1853 to 1856, whose aim was to keep control of the government in the hands of native-born citizens: so called because members originally professed ignorance of the party's activities.
a person whose anti-intellectualism, xenophobia, and other political attitudes recall the Know-Nothings.
adjective
grossly ignorant; totally uninformed.
agnostic.
(initial capital letters) of or relating to the Know-Nothings.
of or relating to a political know-nothing.
Origin of know-nothing
First recorded in 1815–25; 1850–55 for defs. 3, 7
OTHER WORDS FROM know-nothing
know-noth·ing·ism,noun
Words nearby know-nothing
Knowledge is power, knowledge worker, Knowles, know like a book, known, know-nothing, Know-Nothings, known quantity, know one's own mind, know one's place, know one's stuff