Suppresses issue related to new partner? (7)
I believe the answer is:
stepson
'related to new partner?' is the definition.
I can't tell whether this defines the answer.
'suppresses issue' is the wordplay.
'suppresses' becomes 'step' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'issue' becomes 'son' (issue can mean someone's offspring).
'step'+'son'='STEPSON'
Can you help me to learn more?
(Other definitions for stepson that I've seen before include "could be issue for partner" , "Relation, not by blood" , "indirectly related issue" , "Male child of spouse by earlier marriage" , "Subdues" .)