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

Crossword clues for Improvidently:

HASTE: Livy's "blind and improvident" thing
HANDTOMOUTH: Improvident.
FROMHANDTOMOUTH: Improvidently
WASTEFUL: Improvident
WILKINSMICAWBER: Improvident optimist