Not sensitive (to)

I believe the answer is:

numb

(Other definitions for numb that I've seen before include "Without feeling" , "Stunned, insensible" , "Lacking feeling" , "Anaesthetised, unfeeling" , "Without feelings" .)

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.