ちゃうちゃうMeanings1expressionno, no; that's not trueOsaka dialect expression used to strongly deny something, similar to standard Japanese 違う違う.See also: ちゃう「これ、君きみの?」「ちゃうちゃう、俺おれのちゃうで。」"Is this yours?" "No, no, it's not mine."