lycanthropy

/laɪˈkanθɹəpi/
noun
  1. 1

    The state of being a lycanthrope (or werewolf), a person who can shapeshift between the form of a human being and a wolf, often said to happen involuntarily during a full moon; werewolfdom.

  2. 2

    (mythology, by extension) The state of being a person who can shapeshift between the form of a human being and an animal, whether or not it is a wolf.

  3. 3

    A delusion in which one believes oneself to be a wolf or other wild animal.

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Source: https://en.wiktionary.org/wiki/lycanthropy