Antonyms for the word "re-animating" include "killing," "destroying," "exterminating," "annihilating," and "eliminating." These words carry a negative connotation and refer to actions that result in the cessation of life or the complete destruction of something. While "re-animating" implies bringing something back to life or restoring vitality to it, its antonyms refer to actions that have the opposite effect. These antonyms can be used in a variety of contexts, such as describing the end of a living being's life or the breaking down of a project or initiative.