It's very much inclined to deviate (5)
I believe the answer is:
sheer
'deviate' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for sheer that I've seen before include "Very fine like silk stockings" , "Simple" , "(Of fabric) very thin" , "avoid an unpleasant thing" , "Diaphanous, filmy" .)