resignation
US /ˌrez.ɪɡˈneɪ.ʃən/
UK /ˌrez.ɪɡˈneɪ.ʃən/

1.
the act of giving up a job or position voluntarily
:
•
His resignation was accepted by the board.
•
She submitted her resignation letter yesterday.
2.
the acceptance of something undesirable but inevitable
:
•
He faced the difficult news with quiet resignation.
•
There was a sense of weary resignation in her voice.