非礼|ひれいhirei[0]heiban (flat)

1. na-adjective, nounimpoliteness
   私は自分じぶんの非礼ひれいさに恥はずかしさでいっぱいだった。↗

   I was full of shame at my rudeness.

• Synonym無作法ぶさほうNeutralLacking knowledge of proper manners; stresses boorish conduct and ignorance of etiquette rather than a single breach — closer to habitual behavior than 「非礼」.
• Synonym無礼ぶれいNeutralThe everyday word for rudeness; stresses disrespect toward superiors and is more direct than 「非礼」.
• Synonym失敬しっけいNeutralColloquial, with a casual feel, as in 「失敬しました」; also used for taking one's leave or helping oneself to something without permission.
• Synonym失礼しつれいNeutralThe most common everyday word, and also a stock phrase for excusing yourself or taking your leave (「失礼します」); 「非礼」 can be apologized for but does not work as that formula.
• Synonym粗野そやNeutralCoarse and vulgar in speech and bearing; points to an unrefined personality or manner.
• Synonym不躾ぶしつけNeutralImpertinent or presumptuous; stresses abrupt, tactless speech, as in 「不躾なお願い」.
• Synonym不行儀ふぎょうぎNeutralBad manners in everyday conduct — posture, table manners and the like; about improper behavior rather than discourtesy in words.
• Synonym無遠慮ぶえんりょNeutralPresumptuous and unreserved; stresses acting with no regard for other people's feelings.
• RelatedそっけないNeutralCurt and cold in attitude; colloquial. Describes an icy, brusque manner and does not necessarily breach etiquette.
• Related伝法でんぽうNeutralColloquial; brazen, rough behavior, often of women; also refers to eating or watching shows without paying.
• Related傍若無人ぼうじゃくぶじんWrittenA four-character idiom for behaving as if no one else existed, acting self-willed with total disregard for others.
• Related無骨ぶこつNeutralRustic and unpolished, lacking refinement or taste; also clumsy, and often said of men.
• RelatedすげないNeutralThe same word written 「素気ない」; likewise cold and unfeeling, with the same register as the entry above.
• Related不埒ふらちWrittenWritten style; outrageous conduct that defies morality or the law — a stronger condemnation than 「非礼」.
• Relatedにべも無いにべもないNeutralColloquial; describes curt, unceremonious refusal, typically 「にべもなく断る」.
• Related亡状ぼうじょうWrittenWritten but rare and archaic, with very few examples; older than 「非礼」 and best left to reading.
• Related尾籠びろうWrittenWritten style; vulgar and indelicate, typically 「尾籠な話」 for an off-color topic.
• Related僭越せんえつWrittenWritten style; overstepping one's station, mostly as the humble phrase 「僭越ながら」.
• Related推参すいさんWrittenWritten style with an old-fashioned air; visiting uninvited, or presumptuous, pushy behavior.
• Antonym礼儀れいぎNeutralManners and etiquette — the very code that 「非礼」 describes violating.
• Antonym丁寧ていねいNeutralPolite and attentive in speech and conduct — the direct opposite of being 「非礼」.

「非礼」 is written-style prose for a breach of etiquette, as in 「非礼を詫びる」. In everyday speech pick 「失礼」 or 「無礼」 instead, and 「無作法」 when the point is not knowing proper manners. For cold, curt attitudes use 「素っ気ない」, for flat refusals 「にべもなく断る」, for off-color topics 「尾籠な話」. 「不埒」 is a written, stronger condemnation of conduct that defies morals or law. Unlike its Chinese counterpart, Japanese 「非礼」 has no sexual meaning.

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

1. 礼儀れいぎに外はずれた様子ようす。