Union leader quietly taken out and briefed (7)
I believe the answer is:
updated
'briefed' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps there's a link between them I don't understand?
'union leader quietly taken out' is the wordplay.
'leader' suggests taking the first letters.
'quietly' becomes 'p' (musical symbol).
'taken out' becomes 'dated' (I've seen this in other clues).
The initial letter of 'union' is 'u'.
'u'+'p'+'dated'='UPDATED'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for updated that I've seen before include "Made something more modern" , "Modernised" , "revised" , "Dude apt to be made current" , "Brought to current level of completeness" .)