dead giveaway

something that reveals a fact or an intention completely. The car in the driveway was a dead giveaway that someone was at home.

Name	Pronounced	Usage
Sha'ul	-	Biblical Hebrew
Ferdinand	FER-dee-nahnt (German, Dutch), FUR-di-nand (English), FER-dee-nahnd (Finnish)	German, French, Dutch, English, Czech, Slovene, Finnish, Ancient Germanic
Coleman	-	English, Irish
Tiphaine	-	French
BÅRd	-	Norwegian
Pettit	['petit]