Denshi Jisho — Online Japanese dictionary

無茶 むちゃ absurd; unreasonable; excessive; rash; absurdity; nonsense
Common word, Ateji (phonetic) reading, Na-adjective, Noun, Usually written using kana alone 
無茶苦茶 むちゃくちゃ confused; jumbled; mixed up; unreasonable
Common word, Na-adjective, Noun, Usually written using kana alone 

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