不合理的

Very close in meaning and often interchangeable, but '不合情理' particularly emphasizes that something goes against common sense, human nature, or established principles/feelings. It literally means 'doesn't accord with reason and sentiment'.

This describes someone or something that doesn't listen to reason or refuses to be reasonable. It's often used to describe a person's unreasonable behavior.

This is an exclamation meaning 'How can this be reasonable?' or 'That's outrageous!' It expresses strong indignation at something unreasonable or unfair, but it's a set phrase/idiom, not a direct adjective.

Both '不合理的' and '过分' can imply something is excessive or beyond what is appropriate. However, '过分' often describes an action or degree that is too much, even if it might be understandable in context.

'过分' is more about exceeding a reasonable limit in action or degree. '不合理的' focuses on a lack of sound reasoning or fairness.

你这样批评他，有点过分了。(Nǐ zhèyàng pīpíng tā, yǒudiǎn guòfèn le.) — Your criticism of him is a bit excessive/over the top.

This phrase directly translates to 'no reason' or 'lacks reason,' which is very close to 'illogical' or 'unreasonable.'

'没道理' is often used in more informal contexts to express that something doesn't make sense or isn't right. '不合理的' is a more formal and general adjective.

你说的这番话，真没道理。(Nǐ shuō de zhè fān huà, zhēn méi dàolǐ.) — What you just said really makes no sense.

Both words describe something that is not logical. However, '荒谬' carries a stronger sense of absurdity or ridiculousness.

'荒谬' implies something is utterly ridiculous or absurd, often to the point of being laughable. '不合理的' is more general and can refer to something simply unfair or lacking good reason without necessarily being absurd.

这个想法太荒谬了，根本不可能实现。(Zhège xiǎngfǎ tài huāngmiù le, gēnběn bù kěnéng shíxiàn.) — This idea is too absurd, it's impossible to achieve.

An unreasonable situation can often feel unfair, leading to confusion between the two.

'不公平' specifically means 'unfair' or 'unjust,' focusing on a lack of equality or justice. While an '不合理的' situation might be unfair, '不合理的' broader meaning encompasses anything that lacks sound reasoning, not just fairness.

这样的分配方案对我们来说不公平。(Zhèyàng de fēnpèi fāng'àn duì wǒmen lái shuō bù gōngpíng.) — This distribution plan is unfair to us.

If something is unreasonable, it might also be considered inappropriate.

'不适当' means 'inappropriate' or 'unsuitable,' focusing on what is not fitting for a particular situation or context. '不合理的' focuses on the logic or reasoning behind something.

在会议上说这些不适当的话。(Zài huìyì shàng shuō zhèxiē bù shìdàng de huà.) — Saying such inappropriate things in the meeting.