安全|あんぜんanzen[0]heiban (flat)

1. noun, na-adjectivesafety; security
   君きみは自分じぶんの安全あんぜんにもっと気きを配くばるべきだ。↗

   You should be more thoughtful of your safety.

• Synonym安心あんしんNeutralPeace of mind rather than physical safety: 「安心」 is about not worrying, a subjective feeling, while 「安全」 is the objective absence of danger.
• Synonym安泰あんたいWrittenWritten/formal: rock-solid security of a position or organization, as in 「会社の将来は安泰だ」.
• Synonym大丈夫だいじょうぶCasualColloquial and very common for 'no problem, it's fine': 「もう大丈夫」. It leans toward the speaker's own judgment that all is well, where 「安全」 stresses objective safety.
• Synonym無難ぶなんNeutralSafe in the sense of unobjectionable, unlikely to go wrong: 「無難な選択」. Carries a nuance of playing it safe and staying conservative.
• Synonym無事ぶじNeutralUnharmed or without incident, focusing on the outcome: 「無事に着いた」. Use it when the thing feared did not happen.
• Synonym無害むがいNeutralHarmless, causing no harm: 「人体に無害」. About lacking harmful effects, not about being protected from danger.
• Synonym危なげないあぶなげないNeutralShowing no sign of risk, perfectly steady: 「危なげない勝利」.
• Related安心あんしんNeutralPeace of mind rather than physical safety: 「安心」 is about not worrying, a subjective feeling, while 「安全」 is the objective absence of danger.
• Related手堅いてがたいNeutralA steady, reliable approach that avoids risk: 「手堅い投資」. About the method, not the state of being safe.
• Related堅実けんじつWrittenWritten/formal: steady and dependable in conduct, as in 「堅実な経営」. Stresses a reliable, solid way of doing things.
• Related強固きょうこWrittenWritten/formal: firmly solid, as in 「強固な意志」「強固な基盤」.
• Related確実かくじつNeutralCertain and reliable, sure not to fail: 「確実な方法」. About certainty of a method or result.
• Related健全けんぜんNeutralSound and functioning normally, as in 「健全な経営」. About a healthy, normal state rather than safety from danger.
• Related頑丈がんじょうNeutralPhysically sturdy and solidly built: 「頑丈な扉」. About the strength of objects or bodies, not freedom from danger.
• RelatedしっかりCasualColloquial: firmly and reliably, as in 「しっかりした人」. Mostly used adverbially; about being solid and dependable.
• Related堅固けんごWrittenWritten/formal: strongly built or firmly held, of fortresses and willpower: 「堅固な城」.
• Related揺るぎないゆるぎないWrittenWritten/formal: unshakable, as in 「揺るぎない自信」. Stresses that something is firm and will not waver.
• Related安定したあんていしたNeutralStable, staying level without fluctuation: 「安定した収入」. Emphasizes a state that continues unchanged.
• Related堅牢けんろうWrittenWritten/formal: sturdy and durable, said of buildings and products: 「堅牢な作り」.
• Related心丈夫こころじょうぶWrittenWritten/formal: feeling secure because you have someone to rely on: 「君がいれば心丈夫だ」.
• Antonym危険きけんNeutralThe antonym: danger, the possibility that something may go wrong.

Default to 「安全」 for the objective absence of danger. Use 「安心」 for peace of mind, 「大丈夫」 for 'no problem' in speech, 「無事」 for coming through unharmed, 「無難」 for a safe, unremarkable choice, 「安定した」 for stability, and 「頑丈」 or 「堅固」 for physical sturdiness. 「手堅い」「堅実」「確実」 stress reliable methods, 「揺るぎない」「強固」 firmness, 「無害」 harmlessness; 「危険」 is the opposite, danger.

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

1. 安やすらかなこと。心配しんぱいのないこと。
2. 安やすらかなさま。心配しんぱいのないさま。そのような状態じょうたい。