RETD

Set to 12 different clues across 15 published puzzles, most often “No longer working: Abbr.” — The New York Times, Sunday, 15 June 2008.

4 letters

Every clue on record, most used first

No longer working: Abbr.3 times
The New York Times — Sunday, 15 June 2008
Part of AARP: Abbr.2 times
The New York Times — Sunday, 31 July 2011
Like many offs.once
The New York Times — Saturday, 27 November 2010
AARP part: Abbr.once
The New York Times — Monday, 4 January 2010
On Soc. Sec., sayonce
The New York Times — Wednesday, 29 April 2009
On Soc. Sec., typicallyonce
The New York Times — Sunday, 13 July 2008
Abbr. after many a general's nameonce
The New York Times — Wednesday, 29 November 2006
No longer on active duty: Abbr.once
The New York Times — Monday, 4 August 2003
No longer in the service: Abbr.once
The New York Times — Wednesday, 21 May 2003
Like some I.R.A. owners: Abbr.once
The New York Times — Saturday, 22 March 2003
On a pension: Abbr.once
The New York Times — Monday, 5 March 2001
Sent back: Abbr.once
The New York Times — Saturday, 19 June 1999