IPA: /dɪˈpoʊzəl/
KK: /dɪˈpoʊzəl/
The action of removing someone from a position of power or authority, especially in a formal or official manner.
The deposal of the leader was met with protests from his supporters.
Deposal is formed from "de-" (meaning down or away) and "posal" (from Latin "ponere", meaning to place). The word refers to the act of placing something down or away, particularly in the context of removing someone from a position of power.
Think of 'placing down' ('posal') something 'away' ('de-') — that's why deposal means to remove someone from a position.