n. 25B6; adjective the telltale blush on her face : REVEALING, revelatory, suggestive, meaningful, significant, meaning; informal giveaway.
25B6; noun Sue did it, said a telltale : INFORMER, whistle-blower, N. Amer. tattletale; informal snitch, squealer; Brit. informal sneak; Scottish informal clype; dated talebearer.