Gentleman concealed a large repair (7)
I believe the answer is:
hidalgo
'gentleman' is the definition.
(I've seen this before)
'concealed a large repair' is the wordplay.
I cannot quite understand how this works, but
'concealed' could be 'hid' ('hide' can be a synonym of 'conceal') and 'hid' is present in the answer.
'a' is found in the answer.
'large' could be 'l' and 'l' is found within the answer.
The remaining letters 'go' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for hidalgo that I've seen before include "Pachuca is capital of this Mexican state" , "foreign gentleman" , "Spanish fellow" , "Spanish nobleman" , "Grandee" .)