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
Milodrag	-	Medieval Slavic (Hypothetical)
Lucilio	-	Italian
Hiroshi	hee-ṙo-shee	Japanese
Cahyo	-	Indonesian, Javanese
Audra (1)	-	Lithuanian
Corey	['kəʊri]