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不十分 (ふじゅうぶん) Japanese meaning | Kotomora
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その
説せつ
明めい
は
不ふ
十じゅう
分ぶん
だっ
た
。
The explanation was insufficient.
The food supply was inadequate and didn't reach everyone.
Usage patterns 〈 事こと 〉 が 不ふ 十じゅう 分ぶん だ X is insufficient/inadequate
The explanation at the meeting was inadequate.
不ふ 十じゅう 分ぶん な 〈 物もの 〉 insufficient X (modifying a noun)
We lost the match due to insufficient preparation.
〈 事こと 〉 が 不ふ 十じゅう 分ぶん なため because X is insufficient
The plan was cancelled because the funding was insufficient.
〈 事こと 〉 を 不ふ 十じゅう 分ぶん なままにする to leave X insufficiently addressed
Leaving the explanation incomplete invites misunderstanding.
Kanji 分 part, minute of time, segment Related words· 6 不足 is a noun/suru-verb for a concrete shortage or lack (e.g. 睡眠不足), while 不十分 is an adjectival noun describing an insufficient quality or degree.
不完全 emphasizes something being incomplete or flawed in its parts, whereas 不十分 emphasizes an amount or extent falling short.
不備 refers to a concrete defect or missing item (often in documents or equipment), while 不十分 more broadly describes insufficient degree or quality.
Show 2 more 不十分 is a direct, formal adjective meaning 'insufficient', whereas 今ひとつ softens the criticism and sounds more like a mild complaint.
不十分 describes insufficiency in quantity or degree, whereas 不適当 describes a qualitative mismatch with the requirements.
Opposites 十分 means sufficient or adequate, while 不十分 means the opposite—insufficient or inadequate.
不十分 means insufficient or lacking, the opposite of the wholeness expressed by 完全.
不十分 means 'insufficient' or 'inadequate', the direct opposite of the abundant sufficiency expressed by 十二分.
Written forms 不ふ 十じゅう 分ぶん
Standard kanji spelling; high-frequency in news and general use.
不ふ 充じゅう 分ぶん
Alternate kanji spelling using 充; also common but less frequent than 不十分.
Etymology Compound of 不 (negative prefix) + 十分 (sufficient, enough). The spelling 不充分 uses 充 (fill, supply) instead of 分 (part, portion), but both convey the same meaning of insufficiency.
不十分 is the plain, everyday word for 'not enough', while 不全 is a more formal Sino-Japanese term that often implies incomplete function, not just insufficient quantity.
