Is love dead or cut off? (7)
I believe the answer is:
isolate
'cut off?' is the definition.
(both can mean to separate from others)
'is love dead' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'dead' becomes 'late' (similar in meaning).
'is'+'o'+'late'='ISOLATE'
'or' acts as a link.
(Other definitions for isolate that I've seen before include "Strand" , "Place in seclusion" , "Put into quarantine" , "Seclude" , "Cut off from all contact" .)