SUCCUMB definition: 1. to lose the determination to oppose something; to accept defeat: 2. to die or suffer badly from…. Learn more. Discover the meaning of Succumb, explore its usage in everyday language, popular idioms, and fun facts that make this word fascinating. Perfect for learners and curious minds! Succumb means to give in to a force, pressure, or temptation after a struggle or resistance. It’s a word that captures the human experience of facing challenges and acknowledging our limitations. SUCCUMBED definition: 1. past simple and past participle of succumb 2. to lose the determination to oppose something; to…. Learn more.