lose one's cool

• IPA^(key): /ˈluːz wʌnz ˈkuːl/

• Audio (AU)

  (file)

lose one's cool (third-person singular simple present loses one's cool, present participle losing one's cool, simple past and past participle lost one's cool)

1. (idiomatic) To become upset or disconcerted; to lose one's temper.

   Synonyms: blow one's cool, blow one's top, drop one's bundle, go ape, go apeshit, hit the roof, hit the ceiling, lose it, lose one's temper, lose one's rag

   Antonym: keep one's cool

   • 1966 November 18, “To the Ludicrous”, in Time:

     But in his final singles match against Mandarino, the Menace lost his cool. Visibly rattled by noisy spectators, who chanted "Brasil! Bra-sil!" from the third set onward, he collapsed completely in the fifth set.

   • 2006 April 28, Stefanie Cohen, “Naomi Campbell Accused of Attacking Maid in Fit Over Jeans”, in FOXNews.com, retrieved 3 June 2009:

     The fiery femme fatale is notorious for losing her cool, and was once accused of hitting her secretary with a telephone and threatening to throw her from a moving car.

• “lose one's cool”, in OneLook Dictionary Search.