Join a silent assembly (6)

I believe the answer is:

enlist

'join' is the definition.
(I know that enlist is a type of sign up)

'a silent assembly' is the wordplay.
'assembly' indicates an anagram.
'silent' anagrammed gives 'ENLIST'.

(Other definitions for enlist that I've seen before include "Engage" , "Join up in silent way" , "Join the armed services" , "Join the army" , "Enrol in the services" .)

I've seen this clue in The Globe and Mail.

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