Das coisas aprendidas tarde na vida: O.K significa όλα καλά - ola kala -, "tudo correto" em grego.
https://greekreporter.com/2024/03/24/ok-meaning-greek-language/#:~:text=One%20theory%20on%20the%20etymology,%2C%20meaning%20%E2%80%9Call%20good.%E2%80%9D
όλα καλά (ola kala): ao mesmo tempo tudo certo, tudo correto e tudo bem, "all right", enfim, O.K.
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