blow someone's cover

既定 英語（イギリス） (en-GB)

動詞

慣用表現 再帰形

(idiomatic) To reveal that someone's behavior, situation, or identity has been fabricated or deliberately misrepresented for an ulterior motive.

日本語の意味

誰かの正体や秘密がばれる、暴露される / 誰かの偽りの行動や状況、アイデンティティが意図的に作り上げられたものであることを明らかにする

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The undercover agent feared that a single careless comment could blow someone's cover and compromise the entire operation.

その潜入捜査官は、たった一言の不用意な発言で誰かの正体が明らかになり、作戦全体が危うくなるのではないかと恐れていた。

詳細

意味（1）

(idiomatic) To reveal that someone's behavior, situation, or identity has been fabricated or deliberately misrepresented for an ulterior motive.

Iskander's role as a G.A.M. operative was secret—until I unwittingly blew his cover that day.

詳細

意味（2）

(reflexive, idiomatic) To reveal that one has fabricated or deliberately misrepresented one's own behavior, situation, or identity for an ulterior motive.

This spy film purports to be inspired by the true story of Kim Philby (1912-1988), a British intelligence officer and Soviet spy during the 1940s and '50s who gained international notoriety when he blew his cover and defected to the USSR in 1963.

詳細

blows someone's cover （ present singular third-person ）

blowing someone's cover （ participle present ）

blew someone's cover （ past ）

blown someone's cover （ participle past ）