Elevate lieutentant after chopper turned up (5)
I believe the answer is:
exalt
'elevate' is the definition.
(I know that exalt is a more specific form of elevate)
'lieutentant after chopper turned up' is the wordplay.
'lieutentant' becomes 'tl' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'after' says to put letters next to each other.
'chopper' becomes 'axe' (something which chops).
'turned up' says the letters should be written in reverse.
'tl'+'axe'='tlaxe'
'tlaxe' back-to-front is 'EXALT'.
Can you help me to learn more?
(Other definitions for exalt that I've seen before include "(P) raise" , "Raise in rank, character, or status" , "Extol" , "Aggrandize" , "Praise highly" .)