Main Entry: tell·tale

Pronunciation: \ˈtel-ˌtāl\

Function: noun

Date: circa 1548

1 a : talebearer, informer b : an outward sign : indication
2 : a device for indicating or recording something: as a : a wind-direction indicator often in the form of a ribbon b : a strip of metal on the front wall of a racquets or squash court above which the ball must be hit

— telltale adjective