How to say "unreasonable" in Japanese

• 無理むりJLPT N4approx.Common
  na-adjective, nounCovers 'unreasonable' in the sense of a demand, request, or task that is impossible or unjustifiable to carry out. The most common everyday choice when something simply cannot be done or asked of someone.
  それは無理むりな注文ちゅうもんだ。↗

  Your demands are unreasonable.
• めちゃくちゃJLPT N2approx.Common
  na-adjective, nounCovers 'unreasonable' as absurd, nonsensical, or preposterous. Usually written in kana alone. Typical when describing an argument, plan, or situation that makes no sense rather than a demand that is hard to fulfill.
• むちゃくちゃJLPT N1approx.Common
  na-adjectiveEffectively the same word as めちゃくちゃ, meaning nonsensical, unreasonable, or absurd; it is a yojijukugo usually written in kana alone. Use it for chaotic or illogical states, where it carries much the same nuance.
• 無茶むちゃJLPT N1approx.Common
  na-adjective, nounCovers 'unreasonable' as absurd, ridiculous, or over the top. Best for unreasonable behavior, demands, or ways of doing something that go beyond what is sensible, often implying recklessness.
  君きみがそれをたった一人ひとりでやろうなんてむちゃだ。↗

  You are mad to try to do it all alone.
• 過大かだいCommon
  na-adjectiveCovers 'unreasonable' only in the sense of excessive or too much, as in expectations, estimates, or evaluations. Not a general way to say 'unreasonable'; use it when the point is simply that something is more than appropriate.
  世界的せかいてきに過大かだいに評価ひょうかされた中国ちゅうごく書しょといえば、『孫子まごこ』ですかね。↗

  When it comes to Chinese books that are overvalued worldwide I suppose it's Sun Tzu, isn't it?

Choose 無理 for demands or requests that cannot be met, 「めちゃくちゃ」 or 「むちゃくちゃ」 for absurd, nonsensical situations, 無茶 for reckless absurdity, and 過大 for expectations or estimates that are excessive.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 無理むりunreasonable
• めちゃくちゃabsurd
• むちゃくちゃnonsensical
• 無茶むちゃabsurd
• 過大かだいexcessive
• 理不尽りふじんunreasonable
• 不合理ふごうりirrational
• 不条理ふじょうりabsurd
• 不当ふとうunfair
• 不穏当ふおんとうimproper
• 並外れなみはずれout of the common
• わやunreasonable
• 非理ひりunreasonable
• 聞き分けのないききわけのないunreasonable
• はちゃめちゃabsurd
• 無道むどうinhuman
• 横様よこざまwickedness
• 沙汰の外さたのほかabsurd
• けしからんoutrageous
• 偏屈へんくつnarrow-minded
• とてつもないextravagant
• めちゃめちゃabsurd
• 不法ふほうunreasonable
• 逆しまさかしまunreasonable
• 筋違いすじちがいillogical
• 乱暴らんぼうrough (handling, language, etc.)
• 無法むほうoutrageous
• むやみexcessive
• 無体むたいunreasonable
• べらぼうabsurd
• むやみやたらexcessive
• めっぽうextraordinary
• ひどいexcessive