Easily irritated, narky (6)
I believe the answer is:
tetchy
(Other definitions for tetchy that I've seen before include "liable to blow a fuse" , "Easily provoked" , "Fractious" , "Informally irritable" , "Easily irritated or annoyed, narky" .)
I believe the answer is:
tetchy
(Other definitions for tetchy that I've seen before include "liable to blow a fuse" , "Easily provoked" , "Fractious" , "Informally irritable" , "Easily irritated or annoyed, narky" .)