Angry state of mind (6)
I believe the answer is:
temper
'angry state of mind' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for temper that I've seen before include "Moderate; ill humour" , "Harden using heat" , "Fit of anger - don't lose it" , "Moderate - mood" , "Paddy - moderate" .)