glower

/ɡlaʊər/
verb
  1. To look at someone or something in an angry or threatening way.
    • The teacher glowered at the students who were talking during the test.
    • He glowered across the table at his opponent.
    • The cat glowered at the dog from behind the sofa.
Antonyms
noun
  1. An angry or threatening look.
    • She gave him a glower that made him step back.
    • The guard's glower warned us not to come any closer.
    • His glower was enough to silence the room.