IPA: /ˌæb.dɪˈkeɪ.ʃən/
KK: /æbˈdɪkeɪʃən/
The act of giving up a position of power or responsibility, especially a king or queen leaving their throne.
The king's abdication surprised the entire nation.
Abdication → It is formed from "ab-" (meaning away) and "dicare" (meaning to proclaim or declare). The word describes the act of formally declaring one's withdrawal or renunciation from a position of power or responsibility.
Think of someone 'proclaiming' ('dicare') that they are stepping 'away' ('ab-') from their duties — that's what abdication means.