1. to remove someone from a position of power or authority
2. to cause someone to fall from a horse or bicycle

Examples

• The scandal helped unseat the longtime mayor.
• Voters decided to unseat the incumbent senator.
• The opposition party hopes to unseat the current government.
• A sudden movement unseated the rider from her horse.
• The rough terrain unseated several cyclists during the race.
• The rebels planned to unseat the dictator.
• The bucking bronco unseated every cowboy who tried to ride it.