I’m coming back into quiet home (8)
I believe the answer is:
domicile
'home' is the definition.
(synonyms)
'i'm coming back into quiet' is the wordplay.
'coming back' shows that the letters should be reversed in order.
'into' indicates putting letters inside.
'quiet' becomes 'docile' (both can mean well-behaved or submissive).
'im' reversed gives 'mi'.
'mi' going into 'docile' is 'DOMICILE'.
(Other definitions for domicile that I've seen before include "Dwelling" , "Legal place of residence" , "A person's principal home" , "house" , "Habitation" .)