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

Crossword clues for Persistent one 7 letters:

DIEHARD: Persistent one
STICKER: Persistent one.
PRESSON: Persist (... + the first 6 of this one)
INSISTER: Persistent one.
STAYER: Persistent one
TRIERS: Persistent ones.
YAMMERER: One who whines persistently
LIB: One in a "Nevertheless She Persisted" shirt, briefly