気力|きりょくkiryoku[0]heiban (flat)

1. nounwillpower; energy; vitality
   雨あめのために彼かれらは気力きりょくをそがれた。↗

   The rain dampened their spirits.

• SynonymバイタリティNeutralA loanword for robust vitality and life force, often describing people brimming with drive. 「気力」 is the mental strength to endure and see things through.
• Synonym活力かつりょくWrittenThe power that fuels activity, as in 「経済の活力」. 「気力」 is one person's mental fortitude in enduring hardship.
• Synonym意気いきWrittenThe spirit of taking things on positively, as in 「意気揚々」. 「気力」 stresses the grit to endure hardship and persist.
• Synonym精力せいりょくNeutralPhysical energy for getting things done, also sexual stamina, as in 「精力的に働く」. 「気力」 is mental fortitude, not bodily energy.
• SynonymエネルギーNeutralA loanword for energy and power sources, also human drive and capacity for activity. 「気力」 is the mental power needed to act, as in 「気力がない」.
• Synonym英気えいきWrittenOutstanding talent or vigour, mostly in 「英気を養う」. 「気力」 stresses the perseverance to endure and carry on.
• SynonymエナジーNeutralIdentical to 「エネルギー」: energy and vitality, seen mostly in product names. 「気力」 is mental fortitude for seeing things through.
• Synonym気迫きはくNeutralUnflinching, pressing spirit, as in 「気迫のこもったプレー」. 「気力」 is the grit to endure and persist to the end.
• Synonym精気せいきWrittenLife force or vital essence; written in tone and little used. 「気力」 is the mental fortitude for facing hardship.
• Related活気かっきNeutralLiveliness or bustle, fitting both people and places, as in 「活気のある町」. 「気力」 is an individual's inner mental strength.
• Related生気せいきWrittenVitality or liveliness, as in 「生気のない顔」. 「気力」 points to persevering grit rather than visible liveliness.
• Related生命力せいめいりょくWrittenThe power to live and grow, used of animals and plants too. 「気力」 is mental perseverance, a matter of will.
• Related元気げんきNeutralA very common everyday word for good spirits, health and energy. 「気力」 narrows to the willpower to endure and persist to the end.
• Related精せいWrittenEnergy and vitality, mostly in 「精を出す」 and 「精がつく」. 「気力」 stresses mental fortitude.
• Related意気込みいきごみNeutralThe enthusiasm and resolve to do something, as in 「意気込みを語る」. 「気力」 is the grit to persist to the very end.
• Related気勢きせいWrittenMomentum or impetus, as in 「気勢を上げる」. 「気力」 is an individual's steady perseverance, not surging momentum.
• Related血の気ちのけNeutralComplexion or hot-blooded impulsiveness, as in 「血の気が多い」. 「気力」 is about perseverance, not temperament or facial colour.
• Related血気けっきNeutralHot-blooded youthful ardour, as in 「血気盛ん」. 「気力」 means tough perseverance and carries no hint of impulsiveness.
• Related活動力かつどうりょくWrittenThe capacity and vigour for acting and getting things done; formal in tone. 「気力」 is mental perseverance rather than capacity for action.
• Related精根せいこんWrittenEnergy paired with patience, often in 「精根尽きる」. 「気力」 centres on mental fortitude.
• Antonym無気力むきりょくNeutralAntonym: a total lack of drive, as in 「無気力な態度」. It is the direct opposite of 「気力」 in the presence or absence of mental strength.
• Antonym倦怠けんたいWrittenAntonym: weariness or boredom, as in 「倦怠感」. A listless, unmotivated state, it stands only indirectly opposite to 「気力」.

Use 「気力」 for the mental strength to endure hardship and see things through, as in 「気力を振り絞る」. For the power behind activity choose 「活力」, for enthusiasm 「意気込み」, for dauntless spirit 「気迫」; the direct opposite is 「無気力」.

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

1. 困難こんなんなどに堪こらえ、物事ものごとを貫徹かんてつする強つよい精神力せいしんりょく。