BIFF

Set to 3 different clues across 6 published puzzles, most often "Back to the Future" bully — The New York Times, Tuesday, 23 February 2010.

4 letters

Every clue on record, most used first

"Back to the Future" bully3 times
The New York Times — Tuesday, 23 February 2010
Son of Willy Loman2 times
The New York Times — Friday, 16 December 2005
Punch, slangilyonce
The New York Times — Thursday, 30 October 2003