To love in excess (3)
I believe the answer is:
too
'in excess' is the definition.
Both the answer and definition are adverbs. Maybe there's a link between them I don't understand?
'to love' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'to'+'o'='TOO'
Can you help me to learn more?
(Other definitions for too that I've seen before include "On top - also" , "To a greater than desirable extent" , "Also; overly" , "Furthermore" , "Excessively" .)