enervate
verb /ˈɛnəveɪt 
/ [with object] (often as adjective enervated or enervating)
/ [with object] (often as adjective enervated or enervating)Make (someone) feel drained of energy or vitality: enervating heat...
- The day's ride had exhausted her already dwindled energy, and the night had truly enervated her.
- His enemies were enervated and lacked a strong voice.
- The lack of food enervated him and he couldn't produce the goods when they were required.
Synonyms
exhaust, tire, fatigue, weary, wear out, devitalize, drain, sap, weaken, make weak, make feeble, enfeeble, debilitate, incapacitate, indispose, prostrate, immobilize, lay low, put out of action
informal knock out, do in, take it out of one, shatter, poop, frazzle, wear to a frazzle, fag out
British informal knacker
rare torpefy
adjective /ɪˈnəːvət / literary
/ literaryLacking in energy or vitality: the enervate slightness of his frail form...
- A few weeks of the Blair, Bush, and Campbell vision of an enervate media might change their minds.
- After charging his age with being an enervate breed which is "ever on his knees before the footstool of Authority," he goes on to observe that the process of statute-making ought to make one pause before according so much unquestioned deference to statutes.
Derivatives
enervative
Origin
Early 17th century: from Latin enervat- 'weakened (by extraction of the sinews)', from the verb enervare, from e- (variant of ex-) 'out of' + nervus 'sinew'.