sparkle has 15 distinct synonyms spread across 7 of its 7 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
reflect brightly
“Unquarried marble sparkled on the hillside”
be lively or brilliant or exhibit virtuosity
“The musical performance sparkled”
become bubbly or frothy or foaming
“The boiling soup was frothing”
merriment expressed by a brightness or gleam or animation of countenance
“he had a sparkle in his eye”
the occurrence of a small flash or spark
Synonyms, antonyms and the broader and narrower relations for sparkle come from Princeton University’s WordNet. Full sources and licences.
the quality of shining with a bright reflected light