Filed from 2 published puzzles

ELDERLY

Set to 2 different clues across 2 published puzzles, most often “Getting on in years” — The New York Times, Monday, 11 January 2010.

7 letters

Every clue on record, most used first

Getting on in yearsonce
The New York Times — Monday, 11 January 2010
Seniors, with "the"once
The New York Times — Sunday, 30 October 1994

Other answers to these clues

AGED4 letters
AGING5 letters
OLD3 letters
OLDISH6 letters