Tense trader's rear banker ruddy pinched on the sly (9)
I believe the answer is:
trousered
'pinched on the sly' is the definition.
The answer and definition are not the same part of speech. However, adjectives and past participle verbs occasionally mean the same thing.
'tense trader's rear banker ruddy' is the wordplay.
'tense' becomes 't' (abbreviation used in many dictionaries).
'rear' indicates one should take the final letters (the back of the word).
'banker' becomes 'ouse' (I can't explain this - if you can you should give a lot more credence to this answer).
'ruddy' becomes 'red' (synonyms).
The final letter of 'trader' is 'r'.
't'+'r'+'ouse'+'red'='TROUSERED'
Can you help me to learn more?
(Other definitions for trousered that I've seen before include "in jeans?" , "Drunk -- stole" , "Decently attired" , "pocketed cash?" , "Took for oneself" .)