Filed from 3 published puzzles

BYEBYE

Set to 3 different clues across 3 published puzzles, most often “Example of 41-Across” — The New York Times, Wednesday, 18 July 2007.

6 letters

Every clue on record, most used first

Example of 41-Acrossonce
The New York Times — Wednesday, 18 July 2007
"Ta-ta!"once
The New York Times — Wednesday, 15 November 2006
"So long"once
The New York Times — Wednesday, 17 March 1999

Other answers to these clues

ADIEU5 letters
ADIOS5 letters
ADIOSAMIGO10 letters
AUREVOIR8 letters
BYENOW6 letters
CHEERIO7 letters
CIAO4 letters
GOTTARUN8 letters
IMOFF5 letters
IMOUTAHERE10 letters
IMUSTBEOFF10 letters
SAYONARA8 letters