Filed from 3 published puzzles

AGENTAGENT

Set to 3 different clues across 3 published puzzles, most often “Sneaky spy” — The New York Times, Tuesday, 4 December 2001.

10 letters

Every clue on record, most used first

Sneaky spyonce
The New York Times — Tuesday, 4 December 2001
Secretive figure?once
The New York Times — Thursday, 18 February 1999
See notepadonce
The New York Times — Sunday, 3 April 1994

Other answers to these clues

ARMORIAL8 letters
COALMINE8 letters
CROSSCROSS10 letters
DECKERDECKER12 letters
EAGLEEAGLE10 letters
FAULTFAULT10 letters
GANYMEDE8 letters
INDEMNITYINDEMNITY18 letters
MAINLAND8 letters
OCCUPANCYOCCUPANCY18 letters
SPACESPACE10 letters
SPEAKSPEAK10 letters