Feeling it will create a great to-do (9)
I believe the answer is:
sensation
'feeling' is the definition.
(sensation is a kind of feeling)
'it will create a great to-do' is the wordplay.
I cannot quite understand how this works, but
'it' could be 'sa' (SA can mean sex appeal, as in 'it') and 'sa' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sensation that I've seen before include "Feeling produced by stimulation, or dramatic news (9)" , "Awareness of a stimulus, such as heat or pain" , "Feeling; thrilling person or thing" , "Feeling, awareness of stimulation" , "Physical feeling or perception" .)