Claim everyone is an example to note (6)
I believe the answer is:
allege
'claim' is the definition.
(to allege something is to make a claim)
'everyone is an example to note' is the wordplay.
I cannot quite understand how this works, but
'everyone' could be 'all' (all people) and 'all' is found in the answer.
'example' could be 'eg' (short for 'exempli gratia', 'for example' in Latin) and 'eg' is present in the answer.
'note' could be 'e' (musical note) and 'e' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for allege that I've seen before include "State as a fact without proof" , "Declare without actual proof" , "Declare or assert without proof" , "Aver - maintain" , "hold" .)