Copyright © 2026 Kotomora. All Rights Reserved.
膨大 (ぼうだい) Japanese meaning | Kotomora
Common word JLPT N2 Freq. Frequency Top 10,000 Conjugation Meanings 1
na-adjective
huge ; vast ; enormous ; extensive
A na-adjective for an amount, quantity, scale, data set, cost, workload, etc. being extremely large. It often implies that the size is hard to handle or take in.
There is an enormous amount of information online.
2
noun, noun or participle which takes 'suru', intransitive verb
swelling ; expansion ; expand greatly
Only when written 膨大
Less common noun and intransitive する-verb use, restricted to the spelling 膨大. In modern writing, 膨張する, 膨らむ, or 増大する may be more natural depending on the context.
Written forms 膨ぼう 大だい Usage 92%
Standard and common spelling; used for both the ordinary adjective sense and the less common suru-verb/noun sense.
厖ぼう 大だい Usage 7%
rarely-used kanji form
Rare kanji variant; Restricted the suru-verb/noun sense to 膨大.
尨ぼう 大だい Usage 1%
rarely-used kanji form
Rare kanji variant; Restricted the suru-verb/noun sense to 膨大.
Similar words 莫ばく 大だい Also means enormous, especially for money, profit, losses, or quantities; it often has a stronger financial or numerical feel than 膨大.
巨きょ 大だい Emphasizes physical size or scale, such as a huge building or object, while 膨大 is especially common for amounts, data, work, and costs.
膨ぼう 張ちょう A more standard noun/suru-verb for swelling or expansion as a process; 膨大 is much more common as the adjective 膨大な.
Etymology A Sino-Japanese compound written with 膨, associated with swelling or expansion, and 大, 'large.' The variants 厖大 and 尨大 are rare written forms.
shaggy hair or dog
