Nauseated (9)
I believe the answer is:
squeamish
'nauseated' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for squeamish that I've seen before include "Easily upset" , "Easily nauseated" , "Easily shocked, sickened" , "Fastidious and easily disgusted" , "Easily shocked - fastidious" .)