Move to a higher position to be sick (5,2)
I believe the answer is:
throw up
'sick' is the definition.
(synonyms)
'move to a higher position' is the wordplay.
I cannot quite understand how this works, but
'move' could be 'throw' (throwing is a kind of moving) and 'throw' is found in the answer.
'higher' could be 'up' and 'up' is present in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'to be' acts as a link.
Can you help me to learn more?
(Other definitions for throw up that I've seen before include "Vomit - relinquish" , "Reveal" , "Abandon (something)" , "find" , "Produce - vomit" .)