1. sparkled or gave off flashes of light
2. was brilliant, lively, or witty in conversation or performance

Examples

• The diamond scintillated under the bright lights.
• Stars scintillated in the clear night sky.
• The comedian scintillated with his quick wit and clever jokes.
• Her brilliant mind scintillated during the debate.
• The crystal chandelier scintillated as it caught the sunlight.
• The speaker scintillated with fascinating stories from her travels.