YOU SAID:

Japanese is a very dodgy language

INTO JAPANESE

日本語は非常に嫌な言葉です

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Japanese is a very bad word

INTO JAPANESE

日本語は非常に悪い

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Japanese is very bad

INTO JAPANESE

日本人はとても悪い

BACK INTO ENGLISH

Japanese are very bad

INTO JAPANESE

日本人はとても悪い

BACK INTO ENGLISH

Japanese are very bad