Attitudes fixed in time, oddly in dissent (7)
I believe the answer is:
mindset
'time oddly in dissent' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'attitudes fixed' is the wordplay.
'attitudes' becomes 'mind' (I can't justify this - if you can you should believe this answer much more).
'fixed' becomes 'set' (synonyms).
'mind'+'set'='MINDSET'
'in' is the link.
Can you help me to learn more?
(Other definitions for mindset that I've seen before include "thinking normally" , "Characteristic mental attitude" , "convictions" , "Outlook" , "attitudes and values" .)