Self-restrained, though consumed with anger (9)
I believe the answer is:
temperate
'self-restrained' is the definition.
(I've seen this in another clue)
'consumed with anger' is the wordplay.
'consumed' becomes 'ate' (to eat is to consume food).
'with' means one lot of letters go next to another.
'anger' becomes 'temper' (temper is a kind of anger).
'ate' after 'temper' is 'TEMPERATE'.
'though' acts as a link.
(Other definitions for temperate that I've seen before include "Controlled" , "with balmy climate" , "Showing self-restraint" , "Moderate, mild" , "Showing moderation" .)