BADGER

Set to 3 different clues across 3 published puzzles, most often “Nag to death” — The New York Times, Monday, 5 April 2010.

6 letters

Every clue on record, most used first

Nag to deathonce
The New York Times — Monday, 5 April 2010
Nag, nag, nagonce
The New York Times — Monday, 6 October 1997
University of Wisconsin athleteonce
The New York Times — Saturday, 9 August 1997