Felt possibly wonderful with wealthy husband leaving (6)
I believe the answer is:
fabric
'felt possibly' is the definition.
(felt is a kind of fabric)
'wonderful with wealthy husband leaving' is the wordplay.
'wonderful' becomes 'fab' (slang abbreviation of fabulous).
'with' says to put letters next to each other.
'wealthy' becomes 'rich' (similar in meaning).
'husband' becomes 'h' (abbreviation).
'leaving' indicates named letters should be taken away.
'rich' with 'h' taken out is 'ric'.
'fab'+'ric'='FABRIC'
(Other definitions for fabric that I've seen before include "Woven textile" , "Manufactured cloth" , "Silk or satin, say" , "Material; structure" , "Building structure; textile" .)