At home, looked after fiance (8)
I believe the answer is:
intended
'fiance' is the definition.
(thesaurus)
'at home looked after' is the wordplay.
'at' means one lot of letters go next to another.
'home' becomes 'in' ('he's home' can mean 'he's in'**).
'looked after' becomes 'tended' (tending is a kind of looking after).
'in' next to 'tended' is 'INTENDED'.
(Other definitions for intended that I've seen before include "Fiancé (e) - on purpose" , "no mistake!" , "Planned, meant to" , "Fiancee (colloq.)" , "Fiance (e) - on purpose" .)