IdiomDaily LifeFrench

Perdre son latin

Meaning: To be completely baffled by something.

Literally: To lose one's Latin

Example: “Avec ce nouveau logiciel, même l'informaticien y perd son latin.” — With this new software, even the IT guy can't make heads or tails of it.

English equivalent: Not to be able to make heads or tails of something

Equivalents in other languages

Origin: Latin was the whole of formal learning, so losing it meant every intellectual resource had failed. The phrase concedes bafflement rather than ignorance.

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