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重大 (じゅうだい) Japanese meaning | Kotomora

重じゅう大だい

じゅ

う

だ

い

Common word›JLPTN3›Freq.FrequencyTop 10,000

Meanings

1

na-adjective, noun

serious; important; significant; grave

Used for matters, problems, decisions, or consequences that carry substantial weight or potential impact. Often appears in formal, news, or official contexts.

これは重じゅう大だいな問もん題だいだ。

This is a serious problem.

彼かれは重じゅう大だいな決けつ断だんを下くだした。

He made a momentous decision.

Usage patterns

重じゅう大だいな〈事こと〉a serious/grave matter (e.g. incident, problem)
工こう場じょうで重じゅう大だいな事じ故こが起おきた。
A serious accident occurred at the factory.
〈事こと〉に重じゅう大だいな影えい響きょうを与あたえるto have a serious/significant effect on something
この決けっ定ていは今こん後ごの計けい画かくに重じゅう大だいな影えい響きょうを与あたえるだろう。
This decision will likely have a significant impact on future plans.
重じゅう大だいな責せき任にんを負おうto bear a heavy/serious responsibility
社しゃ長ちょうとして重じゅう大だいな責せき任にんを負おっている。
As president, he bears a heavy responsibility.
重じゅう大だいな決けつ断だんを下くだすto make a serious/momentous decision
彼かれは会かい社しゃの将しょう来らいを左さ右ゆうする重じゅう大だいな決けつ断だんを下くだした。
He made a momentous decision that would determine the company's future.

Kanji

重heavy, important, esteem
大large, big

Related words· 6

重じゅう要ようN3
重要 stresses general importance or necessity, while 重大 emphasizes the gravity or serious consequences of a matter.
深しん刻こくN3
深刻 highlights how severe or worrying a situation is, whereas 重大 focuses on the weight or significance of the matter itself.
大だい事じN4
大事 is a softer, everyday word for something important or serious, while 重大 is more formal and often used for grave, high-stakes matters.
クリティカル
重大 is a native Japanese word for 'serious/grave' importance, while クリティカル is a loanword often used in technical or business contexts with the same sense.

Show 2 more

重おもいN5
重大 is a な-adjective meaning 'serious' or 'important' for events and problems, while 重い can additionally describe physical weight.
致ち命めい的てきN1
重大 means serious or grave in a general sense, while 致命的 specifically implies that the seriousness leads to death or irreversible ruin.

Opposites

些さ細さいN2
些細 describes something trivial or negligible, the opposite of 重大, which describes something grave or highly significant.

Don't confuse with

重じゅう体たいN2
重体 refers specifically to a patient's critical medical condition, while 重大 is a general adjective meaning serious or grave and is not limited to health.
重じゅう要ようN3
重大 stresses seriousness or gravity (a grave matter), while 重要 simply stresses importance or priority; learners often confuse the two due to the shared 重 kanji.

Word family

重じゅう大だい事じ
very serious matter; momentous event
重じゅう大だい化か
aggravation; becoming serious; escalation
重じゅう大だい性せい
importance; seriousness; gravity
重

Etymology

Compound of 重 (heavy, weighty) and 大 (big, great). The combination conveys the idea of something being weighty and large in importance or consequence.

じゅう

大だい

視し

taking seriously; regarding as important

重じゅう大だい問もん題だい

serious problem; grave issue; matter of grave concern

重じゅう大だい犯はん罪ざい

serious crime; felony