Adjective has 2 senses

• sparkly(s = adj.all) bubbling, effervescent, frothy, scintillating - marked by high spirits or excitement; "a row of sparkly cheerleaders"; "his fertile effervescent mind"; "scintillating personality"

Derived form noun sparkle₁

• sparkly(s = adj.all) aglitter, coruscant, fulgid, glinting, glistering, glittering, glittery, scintillant, scintillating - having brief brilliant points or flashes of light; "a dress with sparkly sequins"; "bugle beads all aglitter"; "glinting eyes"; "glinting water"; "glittery costume jewelry"; "his glittering eyes were cold and malevolent"; "scintillant mica"; "shop window full of glittering Christmas trees"; "the scintillating stars"; "`glistering' is an archaic term"

Derived form noun sparkle₂