Slightly sensitive? (6)
I believe the answer is:
touchy
'sensitive?' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for touchy that I've seen before include "Oversensitive" , "Irascible" , "Thin-skinned, easily offended" , "sensitive" , "Quick-tempered" .)