Inferior part Charlie gets girl (5,5)
I believe the answer is:
third class
'inferior' is the definition.
(thesaurus)
'part charlie gets girl' is the wordplay.
'part' becomes 'third' (fraction).
'charlie' becomes 'c' (phonetic alphabet: alpha, bravo, charlie etc.).
'gets girl' becomes 'lass' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'third'+'c'+'lass'='THIRD-CLASS'
Can you help me to learn more?
(Other definitions for third class that I've seen before include "(not important)" , "modest level" , "Low grade" , "kind of degree" , "Grade C" .)