Filed from 3 published puzzles

REVERSESIDE

Set to 2 different clues across 3 published puzzles, most often “Back” — The New York Times, Saturday, 20 November 2010.

11 letters

Every clue on record, most used first

Back2 times
The New York Times — Saturday, 20 November 2010
Where to sign a credit card, e.g.once
The New York Times — Sunday, 7 June 2009

Other answers to these clues

AFT3 letters
AGO3 letters
AID3 letters
BETON5 letters
BOOST5 letters
ENDORSE7 letters
FINANCE7 letters
FORTY5 letters
FRO3 letters
HIND4 letters
PUTINAWORDFOR13 letters
REAR4 letters