Filed from 8 published puzzles

IGNITE

Set to 3 different clues across 8 published puzzles, most often “Set off” — The New York Times, Tuesday, 10 July 2007.

6 letters

Every clue on record, most used first

Set off4 times
The New York Times — Tuesday, 10 July 2007
Light3 times
The New York Times — Tuesday, 22 May 2007
Set aflameonce
The New York Times — Monday, 14 February 2000

Other answers to these clues

AIRY4 letters
AMSTEL6 letters
APART5 letters
ASAIR5 letters
DETONATE8 letters
DETONATED9 letters
ETHEREAL8 letters
GLIM4 letters
INITIATE8 letters
IRK3 letters
KINDLE6 letters
KLIEG5 letters