Might he be wasted outright? (7)
I believe the answer is:
steward
'might he' is the definition.
'Steward' can be an answer for 'he'. I am not certain of the 'might' bit.
'be wasted outright?' is the wordplay.
'be' becomes 'stew' (stewing is a kind of being).
'wasted outright?' becomes 'ard' (I can't justify this - if you can you should give a lot more credence to this answer).
'stew'+'ard'='STEWARD'
Can you help me to learn more?
(Other definitions for steward that I've seen before include "Official at function" , "Horse-racing official" , "One who looks after passengers" , "race course official" , "Overseer" .)