Note with snare beyond belief (5)
I believe the answer is:
tenet
'belief' is the definition.
(synonyms)
'note with snare beyond' is the wordplay.
'note' becomes 'te' (musical note).
'with' says to put letters next to each other.
'snare beyond' becomes 'net' (I've seen this in another clue. I am not sure about the 'beyond' bit.).
'te'+'net'='TENET'
Can you help me to learn more?
(Other definitions for tenet that I've seen before include "That's the law" , "Matter of belief" , "A palindromic doctrine or creed" , "Rule" , "Article of faith; doctrine" .)