know-nothing
Concise Oxford English Dictionary © 2008 Oxford University Press:
know-nothing/ˈnəʊnʌθɪŋ/
▶noun
- 1 an ignorant person.
- 2 (Know-Nothing) a member of a 19th-century US political party which was antagonistic towards immigrants, and whose members denied its existence.
– derivatives
know-nothingism noun.
know-nothingism noun.
'know-nothing' also found in these Oxford entries:

