COVERTOPERATION
Set to 2 different clues across 2 published puzzles, most often “Intelligence endeavor” — The New York Times, Tuesday, 6 September 2005.
15 letters
Every clue on record, most used first
- Intelligence endeavoronce
The New York Times — Tuesday, 6 September 2005
- C.I.A. undertakingonce
The New York Times — Thursday, 29 January 1998