Love goddess hosting a function (7)
I believe the answer is:
operate
'function' is the definition.
(synonyms)
'love goddess hosting a' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'goddess' becomes 'Ate' (Greek goddess of mischief).
'hosting' indicates putting letters inside (inserted letters are welcomed in or hosted).
'a' becomes 'per' (eg 'one a day' means 'one per day').
'o'+'ate'='oate'
'oate' going around 'per' is 'OPERATE'.
(Other definitions for operate that I've seen before include "Act in a theatre" , "Function; run" , "Work, run" , "Control, run, a machine say" , "Manage, run" .)