Shines brightly with a sparkling or twinkling light; reflects light in quick, bright flashes.
From Old Norse 'glitra' (to glitter), related to Germanic roots meaning 'to shine.' The word has described sparkling light since Old English times.
The phrase 'all that glitters is not gold' comes from Shakespeare and warns that shiny things aren't always valuable—yet we still use real glitter made from plastic, which is basically the opposite!
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