The clue "Keystone officer" last appeared in the Wall Street Journal crossword on March 3, 2020. The correct answer for this puzzle is "KOP", a 3-letter word.
Solution KOP is 3 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is KOP with 3 letters, and the shortest is KOP with 3 letters.
No, "KEYSTONE OFFICER" hasn´t seen a spike right now. Solvers are most interested in: Rest, mess, Small, Jot and Unique.
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The solution is 3 letters long.