遺恨|いこんikon[0]heiban (flat)

1. noungrudge; ill will; enmity
   この部屋へやには遺恨いこんがたくさんありますが、好意こういはほとんどありません。↗

   There is much hatred in this room, and little kindness.

• Synonym恨みうらみNeutralThe most common everyday word for resentment, also covering points of regret; 「遺恨」 stresses an old grudge left long after the event, still not dissolved.
• Synonym怨念おんねんWrittenWritten word for a deep, obsessive grudge, often with overtones of ghost stories and hauntings; 「遺恨」 is an old enmity left behind by past events.
• Synonym怨恨えんこんWrittenA Sino-Japanese word for the feeling of resentment in general, as in 「怨恨による犯行」; 「遺恨」 stresses an old hatred carried on over time.
• Synonym意趣いしゅWrittenIn the sense of resentment it appears mostly in 「意趣返し」 (paying back a grudge); it also means intention or disposition, so its use is broader than 「遺恨」.
• Synonym怨讐おんしゅうWrittenRare; stresses treating the other as an enemy and can mean the hated enemy itself; 「遺恨」 is the grudge held in one's heart, or regret over unfulfilled hopes.
• Related憎しみにくしみNeutralAn everyday word for the strong feeling of loathing someone, without stressing where it came from; 「遺恨」 stresses resentment left by past events.
• Related仇あだWrittenMostly means a foe or rival, and also resentment or harm, so its range is wider than 「遺恨」; 「遺恨」 never refers to a person, only the lingering grudge or regret.
• Related鬱憤うっぷんWrittenPent-up indignation smoldering inside, usually as 「鬱憤を晴らす」; it need not target a particular person, while 「遺恨」 is a long-unresolved old grudge or regret.
• Related意趣遺恨いしゅいこんWrittenA rare four-character compound for deep-seated hatred toward someone; heavier in tone than 「遺恨」.
• Antonym和解わかいNeutralMaking peace and ending a dispute, or a settlement in a civil suit; the opposite of 「遺恨」, which is an old grudge still held in the heart.
• Antonym恩愛おんあいWrittenRare; kindness and affection, tender family love — the opposite of 「遺恨」, nursing a grudge.

Use 「遺恨」 for an old grudge that lingers long after the event, as in 「遺恨を晴らす」; it can also mean lingering regret over unfulfilled hopes. For everyday resentment pick 「恨み」, for loathing someone 「憎しみ」, for pent-up anger 「鬱憤」; the written words 「怨念」「怨恨」「怨讐」「意趣」「意趣遺恨」「仇」 shift the nuance as noted, and 「和解」「恩愛」 are opposites.

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

1. 怨恨えんこんを忘わすれることなく遺のこすこと。後あとにまで敵意てきいを遺のこすこと。宿怨しゅくえん。また、後あとにまで遺のこされた恨うらみ。
2. 未練みれんを遺のこすこと。期待きたい通とおりにならなかったことに対たいして物もの足たりなく思おもうこと。残念ざんねん。遺憾いかん。