Mate imprisons Romeo, one involved in second city disgrace (10)
I believe the answer is:
opprobrium
'disgrace' is the definition.
(I know this)
'mate imprisons romeo one involved in second city' is the wordplay.
I cannot really see how this works, but
'romeo' could be 'r' (phonetic alphabet: alpha, bravo, charlie etc.) and 'r' is located in the answer.
'mate' could be 'oppo' (I've seen this before) and 'oppo' is found within the leftover letters.
'one' could be 'i' (Roman numeral) and 'i' is found in the answer.
'second' could be 'b' (B can mean second eg B-side) and 'b' is present in the answer.
The remaining letters 'rum' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for opprobrium that I've seen before include "Obloquy" , "scandal, perhaps" , "State, cause, of disgrace" , "Censure" .)