Enter a clue or pattern or both:
The Clue
Turned state's evidence (10 letter answer)
The Answer
COOPERATED
Tags
Notes
The answer COOPERATED is so rare that it appears less than once every 2500 puzzles.
Definition
COOPERATE as a verb:
1. (collaborate, join forces, cooperate, get together) = work together on a common enterprise of project; "The soprano and the pianist did not get together very well"; "We joined forces with another research group"