Hardest to find, perhaps (6)

I believe the answer is:

rarest

(Other definitions for rarest that I've seen before include "fine to maximum" , "Most scarce or least common" , "Most scarce or infrequent" , "Most scarce and probably precious" , "Sartre (anag) -- most uncommon" .)

I've seen this clue in The New York Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.