1.
fault; wrong; mistake; demerit
An error or fault on one's own part — something for which one should accept responsibility. Most often appears in the fixed expression 非を認める (to admit one's fault).
Used as a standalone noun mainly in set expressions. The same kanji also serves as a productive prefix meaning 'non-' or 'un-' (e.g., 非常, 非公開), but that prefix use is separate from this noun sense.
Common collocations
- 非を認める: admit one's fault
- 非を詫びる: apologize for one's fault
- 非を責める: blame (someone) for their fault
- 非がない: be without fault
- 是非: right and wrong (set compound)