無関心|むかんしんmukanshin[2]nakadaka (mid-high)

1. na-adjective, nounapathetic; indifferent; nonchalant; callous
   スーザンは政治せいじに無関心むかんしんである。↗

   Susan is indifferent to politics.

• Synonym不熱心ふねっしんNeutralNot keen or eager; the focus is low commitment to an activity.
• Synonym無頓着むとんちゃくNeutralCovers not caring about appearance or details — the nuance is not being particular, while 「無関心」 is having no interest in something.
• SynonymアパシーWrittenA loanword for apathy, including political apathy; a psychology and sociology term, so it belongs to written or formal prose.
• Related冷たいつめたいNeutralDescribes a cold, heartless attitude; the focus is coldness toward people, not merely a lack of interest.
• RelatedそっけないNeutralA cold, perfunctory attitude; the focus is speech that is short and curt.
• Related無気力むきりょくNeutralLacking drive; the focus is being listless overall, a general lack of energy.
• RelatedぞんざいNeutralDoing things carelessly or sloppily; the focus is a rough, slapdash way of handling things.
• RelatedつれないNeutralCold and heartless toward people; often used when a romantic partner acts cold.
• Related気乗り薄きのりうすNeutralLow enthusiasm; the focus is not really feeling like doing something.
• Related気のないきのないNeutralCareless and half-hearted, as in 「気のない返事」; the focus is a perfunctory attitude.
• Relatedお構いなしおかまいなしNeutralPaying no heed whatsoever; the focus is completely disregarding others.
• Related無感動むかんどうWrittenUnmoved and unimpressed; the focus is feeling no emotion. A word of written or formal prose.
• Antonym関心かんしんNeutralConcern or interest; the direct opposite of 「無関心」.
• Antonym興味きょうみNeutralInterest in something; the opposite of indifferent 「無関心」.

Use 「無関心」 for having no interest in politics, other people, etc., as in 「政治に無関心な若者」. For not caring about appearance or details, 「無頓着」 fits; for coldness toward people, 「冷たい」 or 「素っ気ない」. The opposites are 「関心」 and 「興味」.

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

1. ある事ことに対たいし、関心かんしんを持もっていない様子ようす。
2. ある事ことに対たいし、関心かんしんを持もっていない。