The person giving the lengthy toast seemed to be completely unaware of the degree to which he was enervating [ˈɛnərˌveɪt] his audience.

enervate [ˈɛnərˌveɪt]

Enervate is a formal word used for situations in which someone or something is being sapped of physical or mental vigor, vitality, or strength.

The verb is most common in the participial forms enervated and enervating, as in "children enervated by the summer afternoon heat" and "a tedious discussion we found completely enervating."

Enervate comes from a form of the Latin verb enervare, which literally means "to remove the sinews of,"

English