past tense of glare; looked at someone or something with a fierce, angry, or intense fixed stare.
From Old Norse 'glarra' (to gleam, glint), related to Germanic words for brightness and light. The sense shifted to include the angry, fixed stare we know today.
The word 'glare' is interesting because it refers both to shining light and the angry look—and that's not a coincidence, because an angry stare is intense and piercing like a bright light!
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