Filed from 5 published puzzles

HAVEAT

Set to 3 different clues across 5 published puzzles, most often “Attack” — The New York Times, Thursday, 11 August 2005.

6 letters

Every clue on record, most used first

Attack3 times
The New York Times — Thursday, 11 August 2005
Set upononce
The New York Times — Friday, 3 June 2011
Go foronce
The New York Times — Wednesday, 7 March 2001

Other answers to these clues

ADIP4 letters
ADS3 letters
ASSAIL6 letters
ASSAULTED9 letters
AWALK5 letters
BESET5 letters
BOUT4 letters
CHOOSE6 letters
COMBAT6 letters
COMEAT6 letters
COST4 letters
DIG3 letters