noun, noun or participle which takes 'suru', intransitive verb
last farewell; final parting
A formal, often literary expression for a final goodbye, typically used when parting forever or at death. Can be used as a noun or with する to mean 'to bid a final farewell'.
彼は故人に永別を告げた。
He bade a final farewell to the deceased.
戦地へ向かう友と永別した。
I parted forever from my friend heading to the battlefield.