Antonyms of verb energise

1 of 2 senses of energise

Sense 2
stimulate, arouse, brace, energize, energise, perk up -- (cause to be alert and energetic; "Coffee and tea stimulate me"; "This herbal infusion doesn't stimulate")
       Antonym of de-energise (Sense 1)
      => de-energize, de-energise -- (deprive of energy)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb energise

2 senses of energise

Sense 1
excite, energize, energise -- (raise to a higher energy level; "excite the atoms")
       => change, alter, modify -- (cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue")

Sense 2
stimulate, arouse, brace, energize, energise, perk up -- (cause to be alert and energetic; "Coffee and tea stimulate me"; "This herbal infusion doesn't stimulate")
       => affect -- (act physically on; have an effect upon; "the medicine affects my heart rate")