無気力|むきりょくmukiryoku[2]nakadaka (mid-high)

1. noun, na-adjectiveapathy; lassitude; lethargy; languor

• SynonymアパシーNeutralLoanword for apathy: indifference toward things like politics, as in 「政治的アパシー」; leans psychological and academic rather than everyday.
• Related無関心むかんしんNeutralIndifference — no interest in something; stresses not caring, without necessarily implying low energy.
• Related倦怠けんたいNeutralWeariness or boredom, as in 「倦怠期」; stresses being fed up and tired rather than simply lacking drive.
• Related不熱心ふねっしんNeutralHalf-hearted and unenthusiastic; stresses a perfunctory attitude toward what one does.
• Related無感動むかんどうNeutralUnmoved — nothing stirs the feelings; stresses emotional numbness, not a lack of drive.
• Related不活発ふかっぱつNeutralInactive and slow-moving; stresses little activity, and can describe markets or organizations, not just people.
• Related気乗り薄きのりうすNeutralHalf-hearted about a particular thing; stresses low enthusiasm for that one matter rather than a general lack of energy.
• Related不活動ふかつどうWrittenInaction — doing nothing, accomplishing nothing; written/formal prose and fairly rare.
• Related無頓着むとんちゃくNeutralNot caring or being particular, as in 「服装に無頓着」; stresses not fussing over details, not listlessness.
• Antonym活気かっきNeutralAntonym: energy and liveliness; the opposite of a listless, dispirited state.
• Antonym精力的せいりょくてきNeutralAntonym: energetic and full of drive; the direct opposite of 「無気力」.

Use 「無気力」 for lacking drive and enthusiasm for anything, as in 「無気力な若者」. For indifference say 「無関心」 or 「アパシー」; for weariness or boredom say 「倦怠」. The antonyms are 「精力的」 and 「活気」.

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

1. 気力きりょく、やる気きが無ないこと。また、そのようなさま。