Best ways to leave market (8)
I believe the answer is:
outsmart
'best' is the definition.
(outsmarting is a kind of besting)
'ways to leave market' is the wordplay.
'ways to leave' becomes 'outs' (I can't justify this - if you can you should give a lot more credence to this answer).
'market' becomes 'mart' (synonyms).
'outs'+'mart'='OUTSMART'
Can you help me to learn more?
(Other definitions for outsmart that I've seen before include "Fox; deceive" , "Fool" , "Best" , "Excel in cleverness" , "Defeat by skillful maneuvering" .)