The term 'oust, as from office' can be summarized as the act of removing someone from a position of power or authority. This is usually done through a formal process such as a vote of no confidence or a recall election. The crossword solution for this term is 'UNSEAT, ' which means to remove someone from a position of power or authority. This term is often used in politics when a leader is removed from office due to a lack of support or other issues.