The clue "Oil-producing rock" last appeared in the Universal crossword on April 29, 2020. The correct answer for this puzzle is "SHALE", a 5-letter word.
Solution SHALE is 5 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is SHALE with 5 letters, and the shortest is SHALE with 5 letters.
No, "OIL-PRODUCING ROCK" hasn´t seen a spike right now. Solvers are most interested in: Precarious, fingerprint, Argument, Good person to ask for directions and AUTHORIZED ___.
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The solution is 5 letters long.