十分(じゅうぶん)な

じゅうぶんな
na-adjective
enough; sufficient; adequate; ample
quantity
1. enough; sufficient; adequate
Having as much as is needed to meet a requirement or standard.
十分(じゅうぶん)な睡眠(すいみん)を取(と)ってください。
Please get enough sleep.
準備(じゅんび)は十分(じゅうぶん)ですか。
Are the preparations sufficient?
経験(けいけん)が十分(じゅうぶん)でないため、もう少(すこ)し練習(れんしゅう)が必要(ひつよう)だ。
Because my experience is not sufficient, I need a bit more practice.
2. ample; plenty; thorough
Having more than enough, or being satisfactorily complete and thorough.
十分(じゅうぶん)な成果(せいか)が出(で)た。
Ample results were achieved.
この説明(せつめい)で十分(じゅうぶん)だと思(おも)います。
I think this explanation is thorough enough.
十分(じゅうぶん)な時間(じかん)をかけて検討(けんとう)した結果(けっか)、この方針(ほうしん)に決(き)めた。
After considering it with ample time, we decided on this policy.

Also used as an adverb 十分(じゅうぶん)に (sufficiently; thoroughly). Can also be read じっぷん when meaning "ten minutes," but the na-adjective meaning is always じゅうぶん. The negative form 十分(じゅうぶん)でない or 不十分(ふじゅうぶん)な (insufficient) is equally common.

Common collocations

Similar words

  • 充分(じゅうぶん)な: sufficient — variant kanji form with the same meaning and pronunciation; both are standard
  • 足(た)りる: to be enough — a verb rather than an adjective; more conversational
  • 豊富(ほうふ)な: abundant; rich — implies having much more than needed, especially variety

Related Words

Compare: 足(た)りる (to be enough)
Compare: 豊富(ほうふ) (abundant)
general
Added 2026.4.26 0:13 · Revised 2026.9.4 21:31
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