Like a contortionist (5)
I believe the answer is:
lithe
'like a contortionist' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lithe that I've seen before include "Don -, opera by Verdi" , "Supple and graceful" , "Lissom, supple" , "Elastic" , "Able to move and bend gracefully" .)