なくなる・無くなるnakunaru[0]heiban (flat)

1. godan verb, intransitive verbto be lost (e.g. luggage); to be missing
   それで疑うたがいをさしはさむ余地よちはなくなる。↗

   That leaves no room for doubt.

   あなたの青あおいペンがなくなってしまいました。↗

   I misplaced your blue pen.
2. godan verb, intransitive verbto be used up; to be run out; to be exhausted; to be consumed; to be reduced to zero; to not occur any more
   残のこり時間じかんがあまりなくなってきた。↗

   The sands are running out.
3. godan verb, intransitive verbto disappear (e.g. pain); to be lost (e.g. a dream, confidence)
   やがてこの世よから戦争せんそうがなくなる日ひがくるだろう。↗

   The day will soon come when there will be no more wars in the world.

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

• Synonym消えるきえるNeutralFor disappearing from view or lights going out; focuses on no longer being visible, while 「無くなる」 focuses on ceasing to exist or running out.
• Synonym消滅しょうめつWrittenWritten-style Sino-Japanese word: to die out or cease to exist, as in 「権利が消滅する」.
• Synonym消失しょうしつWrittenWritten-style Sino-Japanese word: disappearance, mostly in objective description, as in 「データの消失」.
• Synonym消え入るきえいるWrittenWritten style: for a voice or sound fading until it is gone, or for being overwhelmed with shame.
• Synonym尽きるつきるNeutralTo be used up or come to an end, as in 「力が尽きる」; stresses being consumed to the last.
• Synonym消え去るきえさるNeutralIntransitive: to vanish completely, leaving no trace, as in 「不安が消え去る」.
• Synonym消え失せるきえうせるCasualColloquial: to vanish completely without a trace, stronger than 「無くなる」; it can carry disgust, as in the command 「消え失せろ」.
• Synonym失せるうせるWrittenWritten style: to disappear or go away, as in 「やる気が失せる」; the imperative 「失せろ」 is used as an insult.
• Synonym失せ去るうせさるWrittenWritten style: for a figure leaving and vanishing from sight; very rare — in everyday speech say 「消える」.
• Related吹き飛ぶふきとぶNeutralFor something vanishing all at once, as in 「疲れが吹き飛ぶ」.
• Related枯渇こかつWrittenWritten style: for resources or talent running dry, as in 「資源が枯渇する」.
• Related吹っ飛ぶふっとぶCasualColloquial: for something suddenly being gone; more casual than 「吹き飛ぶ」.
• RelatedきれるNeutralFor stock running out or a deadline expiring, as in 「在庫が切れる」.
• Related失跡しっせきWrittenWritten style: for a person's whereabouts becoming unknown; close to 「失踪」.
• Related去るさるNeutralTo leave or go away, as in 「故郷を去る」; focuses on a person departing.
• Related蒸発じょうはつNeutralFor liquid evaporating; figuratively, for a person suddenly disappearing, as in 「夫が蒸発した」.
• Related消去しょうきょWrittenWritten style: deleting data or text; usually transitive, as in 「データを消去する」.
• Related干るひるWrittenWritten style: for water drying up or the tide going out; rather old-fashioned, as in 「潮が干る」.
• Related失踪しっそうWrittenWritten style: for a person going missing; mostly in news and legal contexts, as in 「失踪届」.
• Related消し去るけしさるNeutralTransitive: to erase something completely, as in 「記憶を消し去る」.
• Related掻き消えるかききえるCasualColloquial: for a sound or light suddenly vanishing without a trace, as in 「声がかき消える」.
• RelatedドロンCasualSlang: to slip away suddenly, with a joking feel, as in 「ドロンする」.
• Related雲隠れくもがくれWrittenWritten style: for hiding away and not showing oneself, as in 「犯人が雲隠れする」.
• Related涸れるかれるWrittenWritten style: for springs or ponds drying up, or figuratively for talent running dry, as in 「井戸が涸れる」.
• Related種切れたねぎれCasualColloquial: for material or topics running out, as in 「話の種切れ」.
• Antonym現れるあらわれるNeutralThe opposite of 「無くなる」: to appear or come into view.
• Antonym見つかるみつかるNeutralThe opposite of the 'be lost' sense of 「無くなる」: to be found.

Use 「無くなる」 when something you had is lost, used up, or gone. For vanishing from view use 「消える」, for being used up 「尽きる」, for resources running dry 「枯渇」, and for a person going missing 「失踪」; 「見つかる」 is the opposite, for being found. The rest add nuance: written-style words like 「消滅」「消失」「消去」「失せる」, vivid or casual vanishings like 「消え失せる」「吹っ飛ぶ」「ドロン」, and narrower senses like 「切れる」 for stock or deadlines and 「蒸発」 for people who disappear.

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

1. （無なくなる）有あったものが無ない状態じょうたいになる。消失しょうしつする。ある物ものを見みたり使つかったりできなくなる。ある感情かんじょうを感かんじなくなる。抽象的ちゅうしょうてきなものが効果こうかを及およばさなくなる。