hyenic

/haɪˈɛnɪk/
adjective
  1. Relating to or resembling a hyena, especially in being cruel, greedy, or sneaky.
    • The movie's villain had a hyenic laugh that sent chills down the audience's spine.
    • The villain's hyenic grin made everyone in the room uncomfortable.
    • His hyenic behavior at the negotiation shocked even his own team.
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