blow one's cover

Inadvertently give away one's secret identity, as in Mary came to the annual meeting pretending to be a shareholder and hoped no one would blow her cover . This expression uses blow in the sense of "expose or betray," a usage dating from Shakespeare's day.

Common Names:

Name	Pronounced	Usage
Gates	[geits]
Eskarne	-	Basque
Ithamar	-	Biblical, Biblical Latin, Biblical Greek
Yoana	-	Bulgarian
Evelyn	['i:vlin]
Pamella	PAM-ə-lə	English