Figure seen on middle of sofa regularly (5)
I believe the answer is:
often
'regularly' is the definition.
(thesaurus)
'figure seen on middle of sofa' is the wordplay.
'figure' becomes 'ten' (I've seen this in other clues).
'seen on' says to put letters next to each other.
'middle of' indicates the central letters.
The middle letters of 'sofa' are 'of'.
'ten' after 'of' is 'OFTEN'.
(Other definitions for often that I've seen before include "Multiply" , "Turn away" , "Perhaps daily" , "Frequently, many times" , "A great deal" .)