Mischievous god restrained in conversation (4)
I believe the answer is:
loki
'mischievous god' is the definition.
'Loki' can be an answer for 'god' (Loki is an example). I'm unsure of the 'mischievous' bit.
'restrained in conversation' is the wordplay.
'restrained' becomes 'lowkey' (similar in meaning).
'in conversation' indicates a 'sounds like' (homophone) clue.
'lowkey' sounds like 'LOKI'.
Can you help me to learn more?
(Other definitions for loki that I've seen before include "Norse god of mischief" , "Gossip" .)