半|はんhan[1]atamadaka (head-high)

1. noun (prefix), nounhalf; semi-; partial
   半はん時間じかんしたら彼かれはここに来くるでしょう。↗

   He will be here in half an hour.
2. noun (suffix)half-past
3. nounodd number
4. nounhan (unit of land area, approx. 595.8 m^2)

• Synonym半分はんぶんNeutralNeutral word for half that stands alone, as in 「半分に切る」; 「半」 mostly works as a prefix or suffix rather than on its own.
• Synonym二分の一にぶんのいちWrittenWritten/formal: the exact one-half (50%), objective and precise; typical when explaining data or figures.
• RelatedハーフCasualColloquial loanword for half; unlike 「半」 it also means a biracial person or a half of a game, as in 「ハーフサイズ」.
• Related半ばなかばWrittenWritten/formal: the middle or midway point, or partly, as in 「月の半ば」「半ば諦める」; centers on the middle of a process.
• Antonym全ぜんWrittenWritten/formal antonym of 「半」: all or whole, mostly as a prefix, as in 「全世界」.
• Antonym倍ばいNeutralNeutral antonym: expresses multiples, as in 「倍になる」; contrasts with 「半」 as doubling versus halving.

As a prefix or suffix use 「半」; to say half on its own use 「半分」. For the middle of a process pick 「半ば」, for exact figures 「二分の一」; the loanword 「ハーフ」 also means a biracial person.

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

1. 全体ぜんたいを二ふたつに分わけた一ひとつの部分ぶぶん。また、二ふたつに分わかれた状態じょうたい。
2. 時刻じこくを示しめすときに、30分ふんを表あらわす言い方いいかた。
3. 二にで割り切わりきれない数かず。奇数きすう。
4. 土地とちの面積めんせきを測はかる単位たんい。約やく595.8平方メートルへいほうめーとる。