Very exciting (4)
'very exciting' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sexy that I've seen before include "Alluring" , "Hot" , "Exciting carnal desire" , "Very appealing" , "Seductive" .)
(Other definitions for thrilling that I've seen before include "Hair-raising" , "Gripping" , "Engrossing" , "Causing pleasurable excitement" , "Extremely exciting" .)
(Other definitions for rip-roaring that I've seen before include "Exciting, boisterous" , "Wild and noisy" .)