大半|たいはんtaihan[0]heiban (flat)

1. no-adjectivemajority; more than half; most (of)
   ここの学生がくせいは大半たいはんが真面目まじめである。↗

   The students are for the most part diligent.
2. noun, adverbmostly; largely; mainly; predominately; nearly

• Synonym過半数かはんすうNeutralRefers to more than half, used mostly for votes and ballots, as in 「過半数を占める」; stresses the strict numerical threshold.
• Synonym大多数だいたすうNeutralThe great majority — closer to all than 「大半」, as in 「国民の大多数」.
• Synonym大方おおかたNeutralMeans the greater part, also works as an adverb meaning 'mostly'; it can also refer to people in general.
• SynonymたいていNeutralAn adverb for 'usually, mostly'; stresses what is typically the case, as in 「大抵家にいる」.
• Synonym過半かはんWrittenWritten word for strictly more than half; rarely used on its own — 「過半数」 or 「大半」 is the usual choice.
• Synonym大概たいがいNeutralMeans roughly or more often than not; can also mean the gist of something, and as an adverb 'on the whole'.
• Synonym大部分だいぶぶんNeutralThe greater part; interchangeable with 「大半」 and common in both speech and writing.
• SynonymほとんどNeutralAn adverb meaning 'almost all'; with a negative it says there is hardly any. Nearer to 'all' than 「大半」.
• Related多数たすうNeutralA large number, as in 「多数決」, the opposite of 「少数」; 「大半」 stresses a share exceeding half.
• Related多数派たすうはNeutralThe side or faction whose members are in the majority, e.g. a parliamentary majority; restricted to groups.
• Antonym一部いちぶNeutralOne part or a portion — the opposite of 「大半」, which covers most of the whole.
• Antonym僅少きんしょうWrittenAn extremely small amount, as in 「僅少の差」; a written/formal word.

For far more than half or most of something, 「大半」 and 「大部分」 are the default and swap freely. When a vote or count must exceed half, say 「過半数」. For nearly all, 「殆ど」 or 「大多数」 fits better; for what is usually the case, 「大抵」.

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

1. 全体ぜんたいの半分はんぶんをはるかに超こえる数量すうりょう。