What is "enervates"

Usage examples of "enervates".

What is the nature of the luxury which enervates and destroys nations?

Slavery can only be tolerated in despotic states, where freemen, too weak against the government, endeavor to become, for their own advantage, the slaves of those who tyrannize over the state, or in those climates where heat so enervates the body and weakens the courage that men cannot be incited to a laborious task save by the fear of punishment.