Perhaps quote too much love poetry with uniform content (7)
I believe the answer is:
overuse
'perhaps quote too much' is the definition.
(overusing a quote or idea)
'love poetry with uniform content' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'poetry' becomes 'verse' (synonyms).
'with' says to put letters next to each other.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'content' indicates putting letters inside.
'o'+'verse'='overse'
'overse' going around 'u' is 'OVERUSE'.
(Other definitions for overuse that I've seen before include "Excessively utilise" , "Wear out" , "Employ too often" , "Employ excessively" , "Too much work" .)