1. to defeat or overcome completely; to gain control over by superior force or power
Usage: past tense and past participle of ‘overmaster’

Examples

• The army was overmastered by the enemy’s superior numbers.
• She felt overmastered by grief after the loss.
• The small town was overmastered by the flooding river.
• His anger overmastered his better judgment.
• The rebels were quickly overmastered by government forces.
• Fear overmastered her ability to think clearly.