Filed from 4 published puzzles

PERSIST

Set to 3 different clues across 4 published puzzles, most often “Keep going” — The New York Times, Tuesday, 13 May 2003.

7 letters

Every clue on record, most used first

Keep going2 times
The New York Times — Tuesday, 13 May 2003
Not give uponce
The New York Times — Tuesday, 27 February 2007
Hang toughonce
The New York Times — Thursday, 28 February 2002

Other answers to these clues

DONTGIVEUP10 letters
DONTSTOP8 letters
DONTSTOPNOW11 letters
HANGINTHERE11 letters
KEEP4 letters
NEVERSAYDIE11 letters
PERPETUATE10 letters
STAYWITHIT10 letters
TRYTRYAGAIN11 letters