Good and angry, said what one thought of (5)
I believe the answer is:
aired
'said what one thought of' is the definition.
I can't tell whether this definition defines the answer.
'good and angry' is the wordplay.
'good' becomes 'ai' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' means one lot of letters go next to another.
'angry' becomes 'red' (I've seen this in other clues).
'ai'+'red'='AIRED'
Can you help me to learn more?
(Other definitions for aired that I've seen before include "Made public" , "Broadcast; dried" , "Ventilated, or hung out to dry" , "Vented to or exposed to breeze" , "Ventilated in the outdoors?" .)