abdication — ODE

abdication /ˌabdɪˈkeɪʃn

▸ noun

1 an act of abdicating or renouncing the throne:

Edward VIII did not marry until after his abdication.

2 failure to fulfil a responsibility or duty:

we can't allow such an important cause to be undermined by such an abdication of responsibility.

– ORIGIN mid 16th century (in the sense ‘the action of disowning a person’): probably from Latin abdicatio(n-), from the verb abdicare (see abdicate).