むちゃ無茶muchaむっちゃ無茶mutcha
1.

Describing actions or statements that lack common sense or logical reasoning, often resulting in inconvenience to others.

2.

Characterizing behavior that is excessively reckless or extreme, indicating a complete disregard for moderation or limits.

3.

Referring to situations that are markedly extraordinary or unreasonable in degree, suggesting an overwhelming or intolerable condition.

4.

Indicating a profound ignorance or lack of knowledge about a particular subject, often implying a naive or simplistic understanding.

Example:

君がそれをたった一人でやろうなんてむちゃだ。

むちゃくちゃ無茶苦茶muchakucha
1.

Describes a state of complete disorder or chaos, where there is a total breakdown of organization or rationality, often resulting in a situation that is messy or confusing.

2.

Illustrates actions or ideas that are exceedingly unreasonable or far-fetched, lacking logic or practicality to the extent that they seem ludicrous.

3.

Refers to an extreme level of intensity in behavior or characteristics, often suggesting reckless abandon or excessive enthusiasm that borders on irrationality.

4.

Indicates a scenario in which the norms or expected sequences are entirely absent, leading to a situation that defies conventional understanding or reasonable expectations.

Example:

彼女は泣きながら、彼からの手紙をむちゃくちゃに引き裂いて捨てた。