Act crabby? (5)
I believe the answer is:
sidle
'act crabby?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sidle that I've seen before include "Isled (anag.)" , "sidewalk" , "Walk furtively sideways" , "Walk sideways in furtive manner" , "Edge along laterally" .)