Everything some snide gents from the east said (7)
I believe the answer is:
alleged
'said' is the definition.
('allege' can be a synonym of 'say')
'everything some snide gents from the east' is the wordplay.
I cannot really understand how this works, but
'everything' could be 'all' (all things) and 'all' is found in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is located in the answer.
'east' could be 'e' (abbreviation) and 'e' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for alleged that I've seen before include "Made out" , "Asserted in court" , "Claimed (without proof)" , "Deal leg (anag.)" , "Accused, though without proof" .)