- an ignorant or totally uninformed person; ignoramus.
- an agnostic.
- 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.
- grossly ignorant; totally uninformed.
- agnostic.
- of or relating to the Know-Nothings.
- of or relating to a political know-nothing.
- an ignorant person
