Scintillate (verb)

1. To give off small flashes of light; to sparkle.
2. To be intellectually or emotionally stimulating.

Origin:

The word scintillate is derived from the latin word scintillare, which means "to sparkle".

Examples:

1. The diamond scintillated in the light.
2. The stars scintillated in the night sky.
3. Her eyes scintillated with excitement.
4. His conversation scintillated with wit and humor.
5. The lake scintillated in the sunlight.