scintillate

/ˈsɪntɪleɪt/
verb
  1. To emit sparks or flashes of light; to sparkle.
    • The diamond on her ring scintillated under the chandelier.
    • The gemstone scintillated as it caught the light.
    • Fireflies scintillated in the dark garden.
  2. To be lively, brilliant, or witty in conversation or performance.
    • His writing scintillates with clever observations about modern life.
    • The comedian scintillated on stage, keeping the audience in stitches.
    • During the debate, her remarks scintillated with intelligence and humor.
Antonyms
What does "scintillate" mean? | whatsthatwordmean | whatsthatwordmean