幸い|さいわいsaiwai[0]heiban (flat)

JLPT N3approx.Common
Definitions
  1. noun, na-adjectivehappiness; blessedness; luck; fortune; felicity
    あなたがここに居いたのは幸さいわいでした。↗
    You were fortunate to be here.
  2. noun, suru verb, intransitive verbproving fortunate; yielding positive outcome; ending well
  3. adverb, nounluckily; fortunatelyalso as ~に(も)or ~にして
Conjugation
Dictionary form幸いする(さいわいする)
Polite (masu)幸いします(さいわいします)
Negative (nai)幸いしない(さいわいしない)
polite (masen)幸いしません(さいわいしません)
classical zu / nu幸いせず・幸いせぬ(さいわいせず・さいわいせぬ)
Past (ta)幸いした(さいわいした)
polite (mashita)幸いしました(さいわいしました)
Past negative (nakatta)幸いしなかった(さいわいしなかった)
polite (masen deshita)幸いしませんでした(さいわいしませんでした)
Te form幸いして(さいわいして)
Potential幸いできる(さいわいできる)
Passive幸いされる(さいわいされる)
Causative幸いさせる(さいわいさせる)
Causative passive幸いさせられる(さいわいさせられる)
Conditional (ba)幸いすれば(さいわいすれば)
tara幸いしたら(さいわいしたら)
Volitional幸いしよう(さいわいしよう)
polite (mashou)幸いしましょう(さいわいしましょう)
Imperative幸いしろ(さいわいしろ)

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

Synonyms & antonyms
  • Synonym幸せしあわせNeutralRefers to a state of inner contentment, as in 「幸せな家庭」; 「幸い」 often works adverbially to mean 'fortunately'.
  • Synonym幸運こううんNeutralMeans being lucky, as in 「幸運に恵まれる」; it stresses chance good luck rather than an outcome turning out well.
  • SynonymラッキーCasualColloquial for being lucky; can stand alone as the exclamation 「ラッキー!」, with a light, casual feel.
  • Synonym幸福こうふくNeutralHappiness in the sense of a fulfilled life; somewhat written and solemn, as in 「幸福な人生」.
  • Synonym幸さちWrittenAn elegant word for happiness and good fortune, seen in phrases like 「幸多かれ」 or in personal names.
  • Synonym運良くうんよくNeutralAdverb meaning 'luckily', as in 「運良く助かった」; close to the adverbial use of 「幸い」.
  • Synonym福ふくNeutralRefers to good fortune or blessings, mostly in set phrases like 「福を招く」.
  • Synonym多幸たこうWrittenWritten language, mostly in congratulatory phrases like 「ご多幸を祈る」, wishing someone happiness.
  • Synonym果報かほうWrittenOriginally a Buddhist term for karmic retribution, extended to mean good luck, as in 「果報は寝て待て」; has an old-fashioned flavor.
  • Synonym慶福けいふくWrittenWritten word for a joyous, congratulatory matter; found mainly in congratulatory greetings.
  • Synonym清福せいふくWrittenLetter-writing term for quiet, contented happiness, used to wish the recipient well-being.
  • Synonym利福りふくWrittenWritten word covering benefit and happiness; very rare — in daily speech people say 「幸せ」.
  • RelatedハッピーCasualLoanword used colloquially for feeling happy; casual in tone.
  • RelatedついてるCasualColloquial for being in luck, as in 「今日はついてる」.
  • Related幸福感こうふくかんNeutralThe feeling of being happy; refers only to the subjective sense of happiness and never works as an adverb.
  • Related恰も好しあたかもよしWrittenWritten expression meaning 'just then, as it happened', as in 「あたかもよし、雨が上がった」; has a classical literary flavor.
  • Related折よくおりよくNeutralMeans the timing is just right, as in 「折よくバスが来た」; focuses on opportune timing.
  • Antonym不幸ふこうNeutralThe antonym: unhappiness or misfortune; also a polite euphemism for the death of a relative.
  • Antonym災難さいなんNeutralA sudden calamity, as in 「とんだ災難だ」; the opposite of the good luck that 「幸い」 conveys.

Use 「幸い」 for 'fortunately' or in phrases like 「…と幸いです」. For a happy, fulfilled life choose 「幸せ」; for chance good luck, 「幸運」 or 「運良く」; for perfect timing, 「折よく」. Casual speech favors 「ラッキー」 and 「付いてる」. The antonyms are 「不幸」 and 「災難」.

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

Japanese definitions
  1. 望のぞましく有難ありがたい出来事できごと。
  2. 都合つごうのよいこと。
  3. 都合つごうよく。
  4. 良よい結果けっかをもたらす。
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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