Sharp — sardonic (7)
I believe the answer is:
acerbic
(Other definitions for acerbic that I've seen before include "Biting" , "Bitter, sour" , "Cutting" , "Bitter-tasting" , "Astringent; sour" .)
I believe the answer is:
acerbic
(Other definitions for acerbic that I've seen before include "Biting" , "Bitter, sour" , "Cutting" , "Bitter-tasting" , "Astringent; sour" .)