Limits to enraged guy expressing irritability (4)
I believe the answer is:
edgy
'expressing irritability' is the definition.
I can't judge whether this definition defines the answer.
'limits to enraged guy' is the wordplay.
I cannot really see how this works, but
'guy' could be 'ed' (short for Edward) and 'ed' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for edgy that I've seen before include "Keyed up" , "Uneasy" , "Sharp in outline" , "Red shade" , "In a tense state" .)