twinkle

nouns

a rapid change in brightness; a brief spark or flash

scintillation, sparkling, twinkle

merriment expressed by a brightness or gleam or animation of countenance

"he had a sparkle in his eye"; "there's a perpetual twinkle in his eyes"

light, spark, sparkle, twinkle

is derived from

gleam or glow intermittently

"The lights were flashing"

blink, flash, twinkle, wink, winkle

is derived from

emit or reflect light in a flickering manner

"Does a constellation twinkle more brightly than a single star?"

scintillate, twinkle, winkle

is derived from