Filed from 1 published puzzle

UNKNOWNNTT

Set once, to “x” — The New York Times, Sunday, 7 January 2007.

10 letters

Other answers to these clues

BEYONDQUESTION14 letters
CANCEL6 letters
CENTEROFTHEGRID15 letters
CHI3 letters
DECEM5 letters
DELETE6 letters
FILES5 letters
GAS3 letters
GEN3 letters
ILLITERATESMARK15 letters
INCORRECTANSWER15 letters
ITMARKSTHESPOT14 letters