自然|しぜんshizen[0]heiban (flat)

1. nounnature
   われわれは自然しぜんの法則ほうそくに従したがう。↗

   We are subject to the laws of nature.

   エコロジーのために堪え忍たえしのぶのではなく、自然しぜんと調和ちょうわした住環境じゅうかんきょうの快適性かいてきせいが必要ひつようである。↗

   Not just for the sake of the ecology, a natural living environment is necessary.
2. na-adjective, nounnatural; spontaneous; automatic
3. adverb (with と)naturally; spontaneously; automatically

• Synonym天然てんねんNeutralNeutral term for things untouched by human hands, as in 「天然水」; also used jokingly for a natural airhead. Unlike 「自然」, it does not mean nature itself.
• SynonymおのずからWrittenWritten/formal prose for something coming about naturally as conditions allow, as in 「練習すれば自ずから上達する」.
• SynonymひとりでにWrittenWritten/formal prose for something happening by itself, automatically, as in 「ドアが独りでに開く」.
• Related野生やせいNeutralNeutral term for animals and plants growing naturally in the wild, as in 「野生動物」; the opposite of domesticated, and narrower than 「自然」.
• RelatedナチュラルNeutralNeutral loanword for a natural, unaffected look or manner, as in 「ナチュラルメイク」; mostly in fashion contexts.
• Related天然にてんねんにWrittenWritten/formal prose for something happening naturally and without intent; not often used.
• Related自然状態しぜんじょうたいNeutralNeutral term for a state left unaltered by human hands; leans academic or explanatory.
• Antonym人工じんこうNeutralThe everyday, neutral antonym of 「自然」: made or done by people, as in 「人工知能」.
• Antonym人為じんいWrittenWritten/formal prose for the opposite of 「自然」: caused by human agency, as in 「人為的なミス」.
• Antonym作為さくいWrittenWritten/formal prose for the opposite of 「自然」: contrived and deliberate rather than spontaneous, as in 「作為的」.

Default to 「自然」. Use 「天然」 for things untouched by human hands, 「野生」 for plants and animals growing in the wild, and 「ナチュラル」 in fashion talk. For something happening of its own accord, choose 「自ずから」 or 「独りでに」. For the opposites, 「人工」 means man-made and 「人為」 human agency.

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

1. あるがままであること。人ひとの意思いしを持もった行為こういにより、変化へんかが加くわえられていないこと。無為むい。
2. ある物事ものごとの因果いんがやある人ひとの行動こうどうに、不思議ふしぎさや納得なっとくがいかないものがないこと。
3. 人ひとの社会しゃかいを取り巻とりまく、人為じんいを介かいさない環境かんきょう一般いっぱん。