Let almost everyone go “Moo” (5)
I believe the answer is:
allow
'let' is the definition.
(I know that let can be written as allow)
'almost everyone go moo' is the wordplay.
'almost' means to remove the last letter (almost the whole word is kept).
'everyone' becomes 'all' (all people).
'go moo' becomes 'low' (low can mean to make a mooing sound. I am not sure about the 'go' bit.).
'all' with its final letter taken away is 'al'.
'al'+'low'='ALLOW'
Can you help me to learn more?
(Other definitions for allow that I've seen before include "Tolerate" , "Permit, let happen" , "Grant" , "brook" , "OK" .)