| noun | a rapid change in brightness; a brief spark or flash |
| noun | merriment expressed by a brightness or gleam or animation of countenance “he had a sparkle in his eye” |
| verb | gleam or glow intermittently “The lights were flashing” |
| verb | emit or reflect light in a flickering manner “Does a constellation twinkle more brightly than a single star?” |
| twinkle | verb | emit or reflect light in a flickering manner |
| scintillate | verb | give off |
| sparkle | verb | reflect brightly |
| sparkly | adjective | marked by high spirits or excitement |
| twinkly | adjective | smiling with happiness or optimism; - Lewis Carroll |
| flash | noun | a momentary brightness |
| flasher | noun | a light that flashes on and off; used as a signal or to send messages |
| blinker | noun | a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn |
| twinkle | noun | a rapid change in brightness; a brief spark or flash |
| twinkler | noun | an object that emits or reflects light in an intermittent flickering manner |
| scintillant | adjective | having brief brilliant points or flashes of light |
| scintillation | noun | the twinkling of the stars caused when changes in the density of the earth's atmosphere produce uneven refraction of starlight |
| scintilla | noun | a sparkling glittering particle |