The clue "OS X basis" last appeared in the The Washington Post crossword on May 19, 2016. The correct answer for this puzzle is "UNIX", a 4-letter word.
Solution UNIX is 4 letters long. So far we haven´t got a solution of the same word length.
There is 1 solutions. The longest is UNIX with 4 letters, and the shortest is UNIX with 4 letters.
No, "OS X BASIS" hasn´t seen a spike right now. Solvers are most interested in: Express sorrow, Dormant, Lose one's cool, church officer and NYC gallery.
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The solution is 4 letters long.