YOU SAID:

That ice cream is so sick tasting

INTO JAPANESE

そのアイスクリームはとても味が悪い

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That ice cream tastes so bad

INTO JAPANESE

そのアイスクリームはとても不味い

BACK INTO ENGLISH

that ice cream is so bad

INTO JAPANESE

そのアイスクリームはとても悪い

BACK INTO ENGLISH

that ice cream is so bad