Have you ever heard someone say seiri-teki ni muri in Japanese? It sounds dramatic but it’s actually a common expression!


Right! It means something like “I just can’t deal with it on a biological level” — a visceral rejection of something.
| 生理的に無理 (seiri-teki ni muri) | |
|---|---|
| Meaning | I can’t stand it — biological/instinctive revulsion |
| Register | Casual, spoken Japanese |
| Used for | People, smells, foods, situations |
| Nuance | Gut-level, not just dislike — stronger than 嫌い |
What Does 生理的に無理 Mean?
生理的 (seiri-teki) means “physiological” or “biological.” 無理 (muri) means “impossible” or “can’t do it.” Together, the phrase expresses a deep, instinctive, gut-level rejection — stronger than just disliking something.
- あの人、生理的に無理。— I can’t stand that person (on a gut level).
- あの匂い、生理的に無理。— That smell is unbearable to me.
- タコス生理的に無理なんだよね。— I just can’t handle tacos (instinctively).
How Strong Is This Expression?
This phrase is quite strong. It implies that no matter how hard you try, you physically/instinctively cannot accept the thing. It is not just a mild dislike — it is visceral rejection.
| Expression | Strength | Nuance |
|---|---|---|
| ちょっと苦手 | Mild | A little uncomfortable with |
| 嫌い | Medium | Dislike |
| 大嫌い | Strong | Really hate |
| 生理的に無理 | Very strong | Can’t stand it — gut-level rejection |
Using 無理 in Other Contexts
無理 alone is very flexible in Japanese. Here are related uses:
- 無理しないで。— Don’t push yourself.
- それは無理です。— That’s impossible.
- もう無理!— I can’t take it anymore!
Common Mistakes for English Speakers
English speakers sometimes confuse 無理 with 難しい (muzukashii — difficult). But 無理 means truly impossible or beyond your limit, while 難しい just means hard. 生理的に無理 is specifically about instinctive, physical-level intolerance.
Quick Quiz
Fill in the blank: あの人の声、______無理。(That person’s voice, I just can’t stand it at a gut level.)
Answer: 生理的に
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