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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Know-nothings:

IDIOTS: Know-nothings
PIGNORAMUS: Know-nothing swine?
IGNORAMUSES: Know-nothings
IGNORAMUS: Know-nothing
DOPE: Know-nothing
EXPERT: Know-nothing's opposite
FROM: Know-nothing bridge