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We found 19 dictionaries with English definitions that include the word know-nothing:
Click on the first link on a line below to go directly to a page where "know-nothing" is defined.

General (17 matching dictionaries)

1. know-nothing: Merriam-Webster.com [home, info]
2. Know-Nothing, know-nothing: Oxford Learner's Dictionaries [home, info]
3. know-nothing: American Heritage Dictionary of the English Language [home, info]
4. know-nothing, know-nothing: Collins English Dictionary [home, info]
5. Know-Nothing, Know-nothing, know-nothing: Wordnik [home, info]
6. Know-Nothing, know-nothing: Wiktionary [home, info]
7. know-nothing: Webster's New World College Dictionary, 4th Ed. [home, info]
8. know-nothing: The Wordsmyth English Dictionary-Thesaurus [home, info]
9. know-nothing: Infoplease Dictionary [home, info]
10. Know-Nothing, Know-nothing: Dictionary.com [home, info]
11. Know-Nothing, Know-nothing: Wikipedia, the Free Encyclopedia [home, info]
12. Know-nothing: Online Plain Text English Dictionary [home, info]
13. know-nothing: Webster's Revised Unabridged, 1913 Edition [home, info]
14. Know-nothing: AllWords.com Multi-Lingual Dictionary [home, info]
15. KNOW-NOTHING: Dictionary of Americanisms (1848) [home, info]
16. know-nothing: Free Dictionary [home, info]
17. know-nothing: Dictionary/thesaurus [home, info]

Miscellaneous (1 matching dictionary)

18. know-nothing: Wordcraft Dictionary [home, info]

Slang (1 matching dictionary)

19. know-nothing: Urban Dictionary [home, info]

Quick definitions from Wiktionary (Know-nothing) ▸ noun:  (historical) A member of a secret antiforeigner political organization in the nineteenth-century United States. ▸ adjective:  Ignorant; characterized by foolish denial of facts or beliefs in that which is not true. ▸ noun:  An ignorant person; one who lacks knowledge. ▸ Words similar to know-nothing ▸ Usage examples for know-nothing ▸ Idioms related to know-nothing (New!) ▸ Popular adjectives describing know-nothing ▸ Popular nouns described by know-nothing ▸ Words that often appear near know-nothing ▸ Rhymes of know-nothing ▸ Invented words related to know-nothing