拒敌 literally means 'to reject/repel the enemy' — 拒 (jù) means 'to refuse, resist, or repel', and 敌 (dí) means 'enemy' or 'adversary'. Together, they form a formal, literary verb meaning 'to repel or fend off an enemy', often used in historical, military, or strategic contexts. While it can describe human warfare, it’s also commonly applied to animal behavior — for example, describing how certain animals defend their territory or offspring against predators.

The term carries a strong connotation of active resistance and protective intent. It appears frequently in classical Chinese texts, historical narratives, and modern descriptions of defensive instincts in nature. Though grammatically a verb, 拒敌 rarely functions as a standalone predicate in casual speech; it’s more typical in compound phrases like 拒敌于国门之外 ('repel the enemy beyond the national gate') or in descriptive clauses emphasizing vigilance and defense.