Some men voicing author's final words (5)
I believe the answer is:
envoi
'author's final words' is the definition.
(I've seen this before)
'some men voicing' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'ENVOI' is hidden within 'men voicing'.
(Other definitions for envoi that I've seen before include "Concluding part of poem or book" , "Final message" , "Short concluding stanza" , "Author's last words" , "Concluding lines" .)