Loups-garous are mythical creatures commonly known as werewolves. The word originates from French, and its antonym is 'humans' or 'non-werewolves'. Another antonym for loups-garous is 'cats,' as these creatures are often seen as enemies of felines in myth and folklore. Alternatively, the antonym for loups-garous could be 'daytime,' as werewolves are commonly associated with the night and the full moon. The antonym could also be 'domesticated' as werewolves are wild beasts and cannot be tamed. In summary, the antonyms for loups-garous are humans, non-werewolves, cats, daytime, and domesticated.