1 : marked by high spirits or excitement; "his fertile effervescent mind"; "scintillating personality"; "a row of sparkly cheerleaders"
2 : having brief brilliant points or flashes of light; "bugle beads all aglitter"; "glinting eyes"; "glinting water"; "his glittering eyes were cold and malevolent"; "shop window full of glittering Christmas trees"; "glittery costume jewelry"; "scintillant mica"; "the scintillating stars"; "a dress with sparkly sequins"; "`glistering' is an archaic term"
