大部|たいぶtaibu[1]atamadaka (head-high)

1. no-adjectivelengthy (of a book, etc.); voluminous
2. noun, adverbmost (e.g. most part); greater; fairly; a good deal; much
   私は仕事しごとをたいぶためてしまった。↗

   I still have a lot of work to do.

• Synonym大方おおかたNeutralMeans most part, and also the general public. 「大部」 is more written in tone.
• Related大部分だいぶぶんNeutralThe most general word for 'most part'. 「大部」 is more written in tone and can also describe a book as voluminous.
• RelatedだいぶNeutralColloquial adverb meaning 'considerably', as in 「大分良くなった」. 「大部」 is more written in tone.
• RelatedたいていNeutralCovers 'mostly' and 'usually'. 「大部」 is written in tone and means most part or a bulky book.
• Related大概たいがいNeutralMeans roughly, mostly, and also a gist or outline. 「大部」 is more written and can mean most part.
• Related過半かはんWrittenWritten/formal prose for more than half. 「大部」 covers nearly all or a bulky book, a higher proportion.
• Related過半数かはんすうNeutralMore than half the number, often used for votes. 「大部」 means nearly all or a bulky book.
• RelatedほとんどNeutralThe everyday word for 'almost, nearly'. 「大部」 is written in tone and means most part.
• Antonym小部しょうぶWrittenThe antonym in book length: a short work or pamphlet, where 「大部」 is voluminous.

Use 「大部」 for a voluminous book, as in 「大部の著作」; it can also mean most part, with a written tone. In everyday speech say most part with 「大部分」, 'considerably' with 「大分」, and 'mostly' with 「大抵」 or 「ほとんど」. The antonym 「小部」 is a short work.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （たいぶ、だいぶ）書物しょもつの巻数かんすうや冊数さっすうが多おおいこと。ページ数すう、紙数しすうが多おおいこと。
2. （たいぶ、だいぶ）大部分だいぶぶん。ほとんど全部ぜんぶ。
3. （だいぶ）部首ぶしゅ「⼤」で分類ぶんるいした漢字かんじの一群いちぐん。