The word "devitalizes" refers to the act of draining or depriving something of vitality, energy, or life force. There are several synonyms for this word that can be used interchangeably depending on the context of the sentence. Some of them include enervates, weakens, saps, debilitates, exhausts, depletes, drains, and emaciates. Each of these words captures the essence of devitalizing in different ways, but they all convey the same message of reducing the vitality or energy of something. Whether you're writing an essay, article, or research paper, using these synonyms can add variety and depth to your language and help clarify your message.