Enervate

Part of speech: verb (v.)

To deprive of nerve, force, strength, or courage; to render feeble or impotent; to make effeminate; to impair the moral powers of. A man . . . enervated by licentiousness. Macaulay. And rhyme began t' enervate poetry. Dryden.

Synonyms: weaken; enfeeble; unnerve; debilitate.

Part of speech: adjective (a.)

Weakened; weak; without strength of force. Pope.