Eat out and so forth with husband (4)
I believe the answer is:
etch
'eat out' is the definition.
(I've seen this before)
'and so forth with husband' is the wordplay.
'and so forth' becomes 'etc' (synonyms).
'with' is a charade indicator (letters next to each other).
'husband' becomes 'h'.
'etc'+'h'='ETCH'
(Other definitions for etch that I've seen before include "Corrode" , "Carve or engrave into surface" , "Engrave; fix firmly" , "Wear away by chemical reaction" , "Make a deep impression" .)