IdiomDaily LifeFrench

De bon aloi

Meaning: Genuine and of good quality; its opposite, de mauvais aloi, means dubious or in poor taste.

Literally: Of good alloy

Example: “Il a fait une plaisanterie de bon aloi qui a détendu l'atmosphère.” — He made a tasteful joke that lightened the mood.

Origin: Aloi was the legally fixed proportion of precious metal in a coin. Money of good alloy was worth its face value, and the judgment passed from coinage to character and conduct.

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