Filed from 3 published puzzles

ASSENTTO

Set to 3 different clues across 3 published puzzles, most often “Give a thumbs-up” — The New York Times, Saturday, 11 June 2011.

8 letters

Every clue on record, most used first

Give a thumbs-uponce
The New York Times — Saturday, 11 June 2011
O.K.once
The New York Times — Tuesday, 22 July 1997
Go withonce
The New York Times — Sunday, 7 August 1994

Other answers to these clues

ACCEPTABLE10 letters
AGREETO7 letters
ALLOW5 letters
ALLOWABLE9 letters
ALLRIGHT8 letters
ALONG5 letters
APPROVAL8 letters
ASSENT6 letters
AUTHORIZE9 letters
CONSENT7 letters
DATE4 letters
FAIR4 letters