blow one's cover



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.
See also: blow, cover

Common Names:

NameGenderPronouncedUsage
Rashaunrə-SHAWN, ray-SHAWNAfrican American (Rare)
Rossellaros-SEL-lahItalian
Valeriu-Romanian
ByrneBURNEnglish (Rare)
Junjoon (Korean)Chinese, Korean
Bagus-Indonesian