Getting angry is very unpopular out East (6)
I believe the answer is:
heated
'getting angry is' is the definition.
I can't judge whether this defines the answer.
'unpopular out east' is the wordplay.
'unpopular' becomes 'hated' (I've seen this before).
'out' means one lot of letters goes inside another.
'east' becomes 'e' (abbreviation).
'hated' placed around 'e' is 'HEATED'.
'very' is the link.
Can you help me to learn more?
(Other definitions for heated that I've seen before include "Vehement" , "Brief extract" , "Fired-up" , "Furious" , "Angry, impassioned" .)