Filed from 7 published puzzles

LEGUP

Set to 5 different clues across 7 published puzzles, most often “Advantage” — The New York Times, Wednesday, 18 August 1999.

5 letters

Every clue on record, most used first

Advantage3 times
The New York Times — Wednesday, 18 August 1999
Boostonce
The New York Times — Sunday, 23 March 2003
Starting advantageonce
The New York Times — Monday, 13 March 2000
Slight advantage, so to speakonce
The New York Times — Monday, 25 January 1999
Mounter's assistonce
The New York Times — Wednesday, 25 December 1996

Other answers to these clues

ADDTO5 letters
AID3 letters
ASSET5 letters
ATAN4 letters
AVAIL5 letters
EDGE4 letters
EGO3 letters
ELEVATE7 letters
INCREASE8 letters
JUMPSTART9 letters
LIFT4 letters
PLUS4 letters