Being incapacitated, the aristocrat suffered (7)
I believe the answer is:
nobbled
'being incapacitated' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs can occasionally define each other.
'aristocrat suffered' is the wordplay.
'aristocrat' becomes 'nob' (nob can mean an aristocrat).
'suffered' becomes 'bled' (I can't justify this - if you can you should give a lot more credence to this answer).
'nob'+'bled'='NOBBLED'
'the' is the link.
Can you help me to learn more?
(Other definitions for nobbled that I've seen before include "Got at" , "Swindled" .)