How to say "sufficient" in Japanese
Choosing the right word
- 十分じゅうぶんna-adjectiveThe primary word for 'sufficient' or 'enough' in the sense of meeting a need or requirement. Use it when saying something is adequate in amount or degree, as in money, time, or preparation being sufficient.
- 良いよいi-adjectiveHere 'sufficient' means 'good enough' or 'that will do', not quantity. It is really the ordinary word for 'good'; use it when accepting something as satisfactory rather than counting whether it is enough.
- 結構けっこうna-adjective'Sufficient' in the sense of 'fine' or 'satisfactory'—often as a polite reply declining or accepting, as in 'that's enough, thank you'. Not the neutral way to state that something is adequate.どちらの日でも結構です。↗Either day is OK.
- no-adjective, na-adjective, adverbWritten in kana, this covers 'enough' or 'sufficient' only in the sense of a large quantity of something. It is about abundance of countable or measurable things, not adequacy of quality or degree.
- 満足まんぞくna-adjective, noun'Sufficient' via the sense of 'satisfactory'—the word is fundamentally about satisfaction, being content or fulfilled. Choose it when adequacy is judged by whether needs or desires are satisfied, not by measured amount.
For 'sufficient' in the sense of 'enough', 十分 is the default choice; the others match other senses—「良い」 and 結構 for 'that will do', 満足 for satisfaction, 「たくさん」 for quantity.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
See also
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