fiend

/fiหnd/

IPA: /F IY1 N D/

noun
  1. 1

    A devil or demon; a malignant or diabolical being; an evil spirit.

  2. 2

    A very evil person.

  3. 3

    An enemy; a foe.

    โ€œReligion teaches us to love everybody, be one fiend or friend.โ€

  4. 4

    The enemy of mankind, specifically, the Devil; Satan.

  5. 5

    An addict or fanatic.

    โ€œHe's been a jazz fiend since his teenage years.โ€

verb
  1. 1

    To yearn; to be desperate (for something).

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