Subject intended to dispel a sense of satisfaction (11)
I believe the answer is:
contentment
'sense of satisfaction' is the definition.
(feeling content)
'subject intended to dispel a' is the wordplay.
'subject' becomes 'content' (synonyms).
'intended' becomes 'meant' (to mean something is to intend it).
'to dispel' is a deletion indicator.
'meant' with 'a' taken out is 'ment'.
'content'+'ment'='CONTENTMENT'
(Other definitions for contentment that I've seen before include "peace of mind" , "Comfort" , "State of peaceful happiness" , "pleasure" , "Satisfied state" .)