Old dog in races is not inhibited (9)
I believe the answer is:
extrovert
'not inhibited' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs can sometimes mean the same thing.
'old dog in races' is the wordplay.
'old' becomes 'ex'.
'dog' becomes 'rover' (I've seen this before).
'in' is an insertion indicator.
'races' becomes 'tt' (Isle of Man Tourist Trophy races).
'rover' going into 'tt' is 'trovert'.
'ex'+'trovert'='EXTROVERT'
'is' is the link.
Can you help me to learn more?
(Other definitions for extrovert that I've seen before include "party type" , "Person who is more interested in the world than the inner self" , "party animal" , "One who is interested more in outside things than the inner self" , "Outgoing rather than inward-looking" .)