► 形容動詞無茶  [(1)むちゃ]  [coll]    
meaning:  reasonable  rank: 2☆ これを
一時間でやれなんて無茶だ ⇨ It is unreasonable to demand I get this done in one hour
☆ 無茶なこと
言うな ⇨ Don’t be so unreasonable
無茶  [(1)むちゃ]  [coll]    
meaning:  reckless  rank: 2☆ 無茶をすると
体を
壊すよ ⇨ You will hurt yourself if you don’t moderate
More examples:- この辺の家は無茶苦茶に高い ⇨ The houses around here are extremely expensive
 - そんなの無茶だ ⇨ That is unreasonable, too much to ask
 - 彼は無茶苦茶な要求をした ⇨ He made outrageously unreasonable demands