ORON

Set to 2 different clues across 3 published puzzles, most often "___ Diana's altar to protest": Shak. — The New York Times, Sunday, 15 August 2010.

4 letters

Every clue on record, most used first

"___ Diana's altar to protest": Shak.2 times
The New York Times — Sunday, 15 August 2010
"Straight _____ the rocks?"once
The New York Times — Friday, 24 March 1995