安心・安神|あんしんanshin[0]heiban (flat)

JLPT N4approx.Common
Which spelling to use
安心安心 is the most common form and the usual choice for learners; use it when writing or referring to this word.
安神安神 is a rarely used kanji form; you will seldom see it, so beginners should choose 安心 instead.
Definitions
  1. noun, na-adjective, suru verb, intransitive verbpeace of mind; relief; (sense of) security; safety; assurance; confidence
    あいつに仕事しごとを任まかせておけば安心あんしんだ。↗
    You can trust him with any job.
Conjugation
Dictionary form安心する(あんしんする)
Polite (masu)安心します(あんしんします)
Negative (nai)安心しない(あんしんしない)
polite (masen)安心しません(あんしんしません)
classical zu / nu安心せず・安心せぬ(あんしんせず・あんしんせぬ)
Past (ta)安心した(あんしんした)
polite (mashita)安心しました(あんしんしました)
Past negative (nakatta)安心しなかった(あんしんしなかった)
polite (masen deshita)安心しませんでした(あんしんしませんでした)
Te form安心して(あんしんして)
Potential安心できる(あんしんできる)
Passive安心される(あんしんされる)
Causative安心させる(あんしんさせる)
Causative passive安心させられる(あんしんさせられる)
Conditional (ba)安心すれば(あんしんすれば)
tara安心したら(あんしんしたら)
Volitional安心しよう(あんしんしよう)
polite (mashou)安心しましょう(あんしんしましょう)
Imperative安心しろ(あんしんしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym大丈夫だいじょうぶCasualColloquial; means it's fine or no problem, as in 「もう大丈夫だよ」; often used to reassure someone, not a state of mind itself.
  • Synonym安堵あんどWrittenWritten/formal; the relief felt once a worry is lifted, as in 「安堵のため息をつく」; stresses that moment of unburdening.
  • Synonym心丈夫こころじょうぶWrittenWritten/formal; reassured because one has support, as in 「君がいれば心丈夫だ」; feeling secure thanks to someone to rely on.
  • Related安全あんぜんNeutralRefers to objective absence of danger, as in 「安全な場所」; 「安心」 is the subjective feeling of not worrying.
  • Related無難ぶなんWrittenWritten/formal; safe and error-free, as in 「無難な選択」; implies playing it safe and unremarkable, with no sense of inner relief.
  • Related安泰あんたいWrittenWritten/formal; a position or family business is rock-solid, as in 「家の将来は安泰だ」; stresses lasting stability, not momentary relief.
  • Related確実かくじつNeutralMeans certain and reliable, as in 「確実な方法」; focuses on guaranteed results — the very reason one feels 「安心」.
  • Related平安へいあんWrittenWritten/formal and solemn; peace or tranquility, as in 「心の平安」; also names the Heian period. A serene state, while 「安心」 is letting go of worry.
  • Related無事ぶじNeutralMeans safe and unscathed, as in 「無事に帰る」; about the outcome being free of incident, not a psychological feeling.
  • Related堅実けんじつWrittenWritten/formal; steady, dependable conduct, as in 「堅実な経営」; describes people or methods, not a state of mind.
  • Related平穏へいおんNeutralCalm and free of turbulence, as in 「平穏な日々」「心の平穏」; stresses a peaceful state, while 「安心」 stresses worry being dispelled.
  • Related落ち着きおちつきNeutralComposure and a settled mind, as in 「落ち着きがない」; about steady manner and inner calm, while 「安心」 is worry lifting.
  • Related安らかやすらかWrittenWritten/formal; serene and tranquil, as in 「安らかな寝顔」「安らかに眠る」; also said of the departed; quieter in tone than 「安心」.
  • Related安穏あんのんWrittenWritten/formal; a quiet, uneventful life, as in 「安穏な暮らし」; describes a way of living, while 「安心」 is inner reassurance.
  • Related危なげないあぶなげないCasualColloquial; showing no hint of danger or shakiness, as in 「危なげない勝利」; describes steady performance that puts one at ease.
  • RelatedのんきCasualColloquial; carefree and easygoing, sometimes with a hint of carelessness, as in 「呑気な人」; not relief over a resolved matter.
  • Related楽らくCasualColloquial; comfort and ease with no strain, as in 「気が楽になる」; about body and mind feeling unburdened, more casual than 「安心」.
  • Related事無しことなしWrittenWritten and archaic; uneventful or effortless; in modern usage mostly in 「事無きを得る」.
  • Antonym不安ふあんNeutralThe opposite of 「安心」: anxious and uneasy, with feelings that have nothing to rest on.
  • Antonym心配しんぱいNeutralThe opposite of 「安心」: worrying over something, as in 「心配をかける」.

For inner peace of mind, 「安心」 is the default. Use 「安全」 for objective safety, 「大丈夫」 to reassure someone it's fine, 「安堵」 for relief when a worry lifts, 「無事」 for coming through unscathed, and 「平穏」 for a calm, untroubled state; worry is 「心配」. Words like 「無難」「安泰」「確実」「堅実」 describe safe choices, lasting stability, or reliability rather than a feeling.

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

Japanese definitions
  1. 【あんしん】心配しんぱいがないこと、心こころが安やすらぐこと、心こころが安やすらかなこと。
  2. 心こころをひと所しょにとどめて安住あんじゅう不動ふどうであること。
  3. 心配しんぱいがない状態じょうたいになる。
  4. 心配しんぱいや不安ふあんのないさま。
Kanji in this word
English equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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