無情|むじょうmujou[0]heiban (flat)

1. na-adjective, no-adjectiveheartlessness; hardness of heart; coldheartedness; cruelty
   彼かれは無情むじょうにも妻つまを捨すてた。↗

   He heartlessly deserted his wife.
2. no-adjective, Buddhisminsentient; inanimate

• Synonym冷酷れいこくNeutralColdheartedness, as in 「冷酷な人」. Stresses a hard, unfeeling personality and is stronger than 「無情」.
• Synonym残虐ざんぎゃくWrittenWritten. Brutal and savage, as in 「残虐行為」; not necessarily lethal. Stresses acts of violence.
• Synonym残酷ざんこくNeutralCruel; the broadest everyday word, also used of harsh reality as in 「残酷な運命」.
• Synonym残忍ざんにんWrittenWritten. Describes savage methods, mostly of crimes as in 「残忍な犯行」; stresses ferocity.
• Synonym邪険じゃけんCasualColloquial. Harsh and mean in manner, as in 「邪険に扱う」; stresses the attitude shown to others.
• Synonym無残むざんNeutralGhastly or pitiable, as in 「見るも無残」; stresses the sorry state of things rather than a cold heart.
• SynonymひどいCasualIdentical to the earlier 惨い entry; 「酷い」 is just another spelling. Colloquial; stresses ghastliness, while 「無情」 stresses coldness of heart.
• Synonym無慈悲むじひWrittenWritten register. Utterly without pity, as in 「無慈悲な仕打ち」; 「無情」 centers on the lack of human warmth or on nature's indifference.
• Synonym冷血れいけつNeutralCold-blooded, as in 「冷血漢」. Carries strong condemnation and is said mostly of people.
• Synonym非人情ひにんじょうWrittenWritten. Ignoring people's feelings, or standing aloof from human sentiment; close in sense to 「無情」.
• Related冷淡れいたんNeutralCold and indifferent, as in 「冷淡な態度」. Milder in degree than 「無情」.
• Related冷たいつめたいNeutralPhysically cold, or cold in manner; the most colloquial of these words and free of the lamenting tone 「無情」 can carry.
• Related過酷かこくWrittenWritten. Describes harsh conditions, as in 「過酷な労働」; implies no malice and is said chiefly of circumstances.
• Related非道ひどうWrittenWritten. Contrary to reason and decency, as in 「極悪非道」; stresses the breach of moral principles.
• Related極悪ごくあくWrittenWritten. Utterly wicked, as in 「極悪人」. The strongest of these words in degree.
• Related凶悪きょうあくWrittenWritten. Vicious, said mostly of criminals as in 「凶悪犯」; stresses the heinous nature of the crime.
• RelatedむごいCasualColloquial. Cruel or ghastly; stresses the brutality of the means, while 「無情」 stresses the lack of sympathy.
• Related手ひどいてひどいNeutralA heavy blow or harsh treatment, as in 「手ひどい仕打ち」; stresses the severity of the degree.
• Related冷酷無残れいこくむざんWrittenWritten four-character compound for coldhearted cruelty; emphatic, and heavier in degree than 「無情」.
• Related非人道的ひじんどうてきWrittenInhumane; rather formal, as in 「非人道的な扱い」. Frames the cruelty as a violation of humanitarian standards.
• RelatedむごたらしいNeutralHarrowing or ghastly, as in 「惨たらしい事件」. Describes the gruesome scene, not the hardness of a person's heart.
• Related苛虐かぎゃくWrittenWritten and rare. Cruel abuse or maltreatment; stresses the act of tormenting others.
• Related酷薄こくはくWrittenWritten. Cold and unkind, as in 「酷薄な性格」; not much used.
• Related惨酷さんこくWrittenWritten and rare. Close in meaning to 「残酷」, which has a different first character and reading; everyday usage favors 「残酷」.
• Antonym慈悲じひNeutralAntonym. Mercy and compassion, as in 「慈悲深い」; the opposite of the coldheartedness of 「無情」.
• Antonym有情うじょうWrittenAntonym. Buddhist term for all sentient beings; also means having charm or feeling. The direct opposite of 「無情」.

For cold indifference use 「冷たい」 or 「冷淡」; for coldheartedness use 「冷酷」. 「無情」 fits a lack of human feeling or nature's mercilessness, as in 「無情の雨」 and 「無情にも」. For cruelty choose 「残酷」; for mercy, 「慈悲」.

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

1. 思い遣おもいやりのないこと。
2. 精神せいしんや感情かんじょうのないこと。