天 然(てんねん)

てんねん

noun, no-adjective

natural, nature

1. natural, nature

Existing in or produced by nature; not artificial or man-made.

この水(みず)は天然(てんねん)の湧(わ)き水(みず)だ。

This water is natural spring water.

天然(てんねん)素材(そざい)を使(つか)った製品(せいひん)。

Products made with natural materials.

天然(てんねん)ガスは重要(じゅうよう)なエネルギー資源(しげん)だ。

Natural gas is an important energy resource.

2. natural, airhead (colloquial)

A person who is naturally scatterbrained or innocently oblivious.

彼女(かのじょ)は天然(てんねん)だから、悪気(わるぎ)はないよ。

She's just naturally airheaded, she doesn't mean any harm.

Colloquial usage

彼(かれ)は天然(てんねん)ボケで、いつもみんなを笑(わら)わせる。

He's a natural airhead and always makes everyone laugh.

天然(てんねん)ボケ = unintentionally funny person

あの人(ひと)、天然(てんねん)なのか計算(けいさん)なのか分(わ)からない。

I can't tell if that person is genuinely airheaded or doing it on purpose.

COMMON COMPOUND WORDS:

天然(てんねん)水(すい) (natural water)
天然(てんねん)記念物(きねんぶつ) (natural monument, protected species)
天然(てんねん)資源(しげん) (natural resources)
天然(てんねん)素材(そざい) (natural materials)
天然(てんねん)ガス (natural gas)
天然(てんねん)パーマ (naturally curly hair)

COLLOQUIAL USAGE:
天然(てんねん) alone can mean "airhead" or a person who is naturally scatterbrained in an endearing way. This is different from 天然(てんねん)ボケ, which specifically means someone who unintentionally says funny things.

ANTONYM:

人工(じんこう) (artificial, man-made)

Related Words

Antonym: 人工(じんこう) (artificial)

Antonym: 人造(じんぞう) (man-made)

general

Added 2026.1.12 18:39 · Revised 2026.5.27 0:12

03500/03560_tennen