Wrestling with total love (4)
I believe the answer is:
sumo
'wrestling' is the definition.
(I know that sumo is a type of wrestling)
'with total love' is the wordplay.
'with' means one lot of letters go next to another.
'total' becomes 'sum' (synonyms).
'love' becomes 'o' (love means zero in tennis).
'sum' put next to 'o' is 'SUMO'.
(Other definitions for sumo that I've seen before include "Jap. wrestling" , "Style of traditional Japanese wrestling" , "Large Japanese wrestler" , "Type of Japanese wrestling" , "Japanese form of wrestling" .)