研究社 新英和中辞典
half
half /hˈæf｜hάːf/
1 可算名詞 [時に 不可算名詞] 半分，2 分の 1; (大ざっぱに分けた)約半分 〔of〕《★【用法】 half of… の形の場合，修飾語がつく時以外不定冠詞は用いない》.
2 不可算名詞 半時間，30分.
3 可算名詞 《口語》
a 《主に英国で用いられる》 半パイント.
b 《主に英国で用いられる》 (子供の)半額切符.
c 《主に米国で用いられる》 50 セント; 《主に英国で用いられる》 半ペニー.
4 可算名詞 《主に英国で用いられる》 半学年，(1 学年 2 期制の)後期.
5 可算名詞
a 【競技】 試合の前[後]半，ハーフ (cf. quarter 名詞 A1n).
b 【フットボール・ホッケーなど】 ＝halfback.
c 【野球】 表，裏 (cf. top１ 名詞 11，→bottom 名詞 7).
1 a 半分の，2 分の 1 の; 約半分の.
b [冠詞または one's のついた名詞の前に置いて] …の半分の 《★【用法】 (1) もと名詞で，あとに of が略された用法に由来する; (2) 一般的には half a mile，half an hour の語順をとるが，また a half mile，a half hour ともなる; (3) 主語になる場合，half の次の名詞が単数なら動詞は単数扱い，複数なら複数扱い》.
2 不十分な，不完全な.
1 半ば，半分(だけ).
2 なまはんかに，いいかげんに.
3 《口語》 いくぶん，かなり; ほとんど.
4 《英口語》 (時間が) 30 分過ぎで.
名詞
(《複数形》 halves /hˈævz｜hάːvz/; 3，5b は halfs，halves)
- 用例
-
代名詞
〔もの・集団などの〕半分(のもの，人) 〔of〕《★【用法】 主語になる場合，of の次の名詞または half の内容の数が単数なら動詞は単数扱い，複数なら複数扱い; cf. 形容詞 1b 【用法】 (3)》.
形容詞
(比較なし)
副詞
(比較なし)
【語源】
調べた例文を記録して、効率よく覚えましょう
Weblio会員無料で登録できます
履歴機能
過去に調べた単語を確認できる
語彙力診断
診断回数が4回に増加
マイ単語帳
便利な学習機能付き
マイ例文帳
文章で意味を理解できる
Eゲイト英和辞典
half
音節half発音記号・読み方hǽf|hɑ́ːf変化複halves{hǽvz|hɑ́ːvz|ha´:vz}
コア半分に分けたもの
名詞
成句... and a half
((口))たいした［すごい］…
成句by half
半分だけ
成句by halves
中途半端に（通例否定文で用いる）
成句go halves [half and half]
〈…と〉割り勘にする，折半する〈with〉
成句in half⇔into halves
半分に
成句too ... by half
((おもに英))あまりに…
形容詞
副詞
成句half as many [much] again (as ...)
…の1.5倍
成句half past...
…時半
成句not half
((英口))①はんぱじゃなく，ひどく
②少しも…でない
成句not half as ... as ～
～の半分も…でない
コア半分に分けたもの
名詞
1半分，2分の1；半分に分けたもの；（分数の），（小数の）0.5
2（時刻の）半，30分
3((the ～))≪ｻｯｶｰなど≫（試合の）前半［後半］；≪野球≫（1イニングの）表［裏］；((口))=halfback
4((英))（ビールの）半パイント
5((英))（電車・バスなどの）子どもの切符（通例半額）
6((米口))50セント銀貨；((英口))半ペニー銅貨
7((英))（1学年2期制の）半期
|
2（時刻の）半，30分
3((the ～))≪ｻｯｶｰなど≫（試合の）前半［後半］；≪野球≫（1イニングの）表［裏］；((口))=halfback
4((英))（ビールの）半パイント
5((英))（電車・バスなどの）子どもの切符（通例半額）
6((米口))50セント銀貨；((英口))半ペニー銅貨
7((英))（1学年2期制の）半期
成句... and a half
((口))たいした［すごい］…
|
成句by half
半分だけ
成句by halves
中途半端に（通例否定文で用いる）
成句go halves [half and half]
〈…と〉割り勘にする，折半する〈with〉
成句in half⇔into halves
半分に
成句too ... by half
((おもに英))あまりに…
形容詞
((限定))（比較変化なし）1半分の，2分の1の（おもに単位を示す表現が後にくる）
2中途半端な，不完全な
|
2中途半端な，不完全な
副詞
成句half as many [much] again (as ...)
…の1.5倍
成句half past...
…時半
成句not half
((英口))①はんぱじゃなく，ひどく
②少しも…でない
成句not half as ... as ～
～の半分も…でない
語法 ①half ofとhalf: ofを省略してはならない条件 half ofのofは省略されて，形容詞的に使うこともある．ただし，人称代名詞の前にくるとき，halfの前に限定詞や形容詞を伴うときは，ofは省略できない．さらにはっきりと全体をイメージしてその半分というときにはofは欠かせない/Half (of) the students were late for the class.学生の半分は遅刻した/I know half of them.彼らの半分を知っている/the western half of the town町の西側半分/Half of ten is five.10の2分の1は5である ②主語のhalf of: 数の一致 half ofが主語になるときは後ろの名詞の数に動詞を一致させる/Half (of) the apples are rotten.（複数の）リンゴの半分が腐っている/Half of the apple is rotten.（1つの）リンゴの半分が腐っている |
語法 halfの形容詞としての用法は，half ofの表現からofが欠落したものと考えられる．従って，halfがa, the, this, myなどの限定詞の後ろ（形容詞本来の位置）に来ることは本来的にはない．ただし，one and a half hoursなどの定型的な表現（one and a halfの後の名詞は複数形）や，a half mile [hour]((おもに米))など，a half＋名詞という少数の例外はある．それ以外は通例，halfは限定詞の前に置く．なお，halfの後ろの名詞が数・量・時間・距離などの単位を示す表現の場合には，慣用的にhalf a [an]＋名詞の形で使い，ofを伴うことはない |
日本語WordNet(英和)
half
副詞
形容詞
名詞
Wiktionary英語版
出典：Wiktionary
half
出典:『Wiktionary』 (2026/08/29 01:14 UTC 版)
| 20 | ||
| ← 1 | 2 | 3 → |
|---|---|---|
| Cardinal: two Ordinal: second Abbreviated ordinal: 2nd Latinate ordinal: secondary Reverse order ordinal: second last, second to last, second from last, last but one Latinate reverse order ordinal: penultimate Adverbial: two times, twice Multiplier: twofold Latinate multiplier: double Distributive: doubly Germanic collective: pair, twosome Collective of n parts: doublet, couple, couplet Greek or Latinate collective: dyad Metric collective prefix: double- Greek collective prefix: di-, duo- Latinate collective prefix: bi- Fractional: half Metric fractional prefix: demi- Latinate fractional prefix: semi- Greek fractional prefix: hemi- Elemental: twin, doublet Greek prefix: deutero- Number of musicians: duo, duet, duplet Number of years: biennium Quantile: median |
||
語源
From 中期英語 half, halfe from 古期英語 healf (“half”); as a noun, 'half', 'side', 'part', from Proto-West Germanic *halb, from Proto-Germanic *halbaz.
発音
- (Received Pronunciation, General South African) IPA: /ˈhɑːf/
- (Wales) IPA: /ˈhaːf/
- (Australia, New Zealand) IPA: /ˈhäːf/, /ˈhɐ̞ːf/
- 韻: -ɑːf
- (General American, Canada, Ireland) IPA: /ˈhæf/
-
- (New York City, New Orleans, Philadelphia, Baltimore) IPA: /ˈhɛə̯f/
-
- (Northern England, Scotland) IPA: /ˈhaf/
- ハイフネーション: half
名詞
- One of two usually roughly equal parts into which anything may be divided, or considered as divided.
-
1634 October 9 (first performance; Gregorian calendar), [John Milton], edited by H[enry] Lawes, A Maske Presented at Ludlow Castle, 1634: […] [Comus], London: […] [Augustine Matthews] for Hvmphrey Robinson, […], published 1637, →OCLC; reprinted as Comus: […] (Dodd, Mead & Company’s Facsimile Reprints of Rare Books; Literature Series; no. I), New York, N.Y.: Dodd, Mead & Company, 1903, →OCLC:
- Half of a standard measure, chiefly:
- (preceded by “a” or a number) The fraction obtained by dividing 1 by 2.
- Synonym: ½
- Any of the three terms at Eton College, for Michaelmas, Lent, and summer.
- (slang) A half sibling.
- (UK, dated) A child ticket. Two and a half to Paddington.
- (sports) abbreviated form for half marathon.
- (numismatic slang) Clipping of half-dollar.
派生語
- ain't half
- and a half
- better half
- by halves
- call it half a day
- cry halves
- fly-half
- fly half
- go halves
- half a brain
- half a chance
- half-a-dollar
- half a grunter
- half a head
- half a loaf is better than none
- half and half
- half-cock
- half-length
- half mask
- half-pay
- half-remember
- half slab
- half sole
- half-solid
- half-ton
- half-world
- heavy half
- hell and half of Georgia
- how the other half lives
- in half
- in one's half
- know the half of
- left-half
- not half
- not half bad
- one and a half syndrome
- one-half crosswise
- one-half lengthwise
- other half
- right-half
- scrum half
- scrum-half
- second half
- seven and a half
- sharp-and-a-half
- shelter half
- swift half
- take one's half out of the middle
- the half of it
- time and a half
- too clever by half
形容詞
half (not comparable)
- Consisting of a half (½, 50%).
- Consisting of some indefinite portion resembling a half; approximately a half, whether more or less; partial; imperfect.
-
a half truth
-
- (of a sibling) Having one parent (rather than two) in common.
- Alternative form: half- (prefix)
- (of a relative other than a sibling) Related through one common grandparent or ancestor rather than two.
- Alternative form: half- (prefix)
使用する際の注意点
派生語
See also those listed at Category:English terms prefixed with half-.
Terms derived from half (adjective). A few may possibly be derived from the adverb or noun, it's hard to tell.
- all over hell's half acre
- at half-sword
- automatic half-barrier level crossing
- baker's half dozen
- by half
- centre-half
- centre half
- cheap at half the price
- cut the baby in half
- do by half-measures
- dummy half
- first half
- four-half
- glass-half-empty
- glass-half-full
- go half and half
- go off half-cocked
- half a century
- half-a-crown
- half adder
- half-a-dozen
- half a dozen
- half again
- half a loaf is better than no bread
- half a loaf is better than no loaf
- halfalogue
- half a mile
- half a mind
- half a mo
- half-and-half
- half an eye
- half-angel
- half-an-hour
- half-ape
- half-arse
- half-asleep
- half-ass
- half ass
- half-assed
- half-assedly
- half-assery
- half-awake
- half back
- halfback
- half-back
- half baked
- half-baked
- half-bakedness
- half-ball
- half-baptism
- half-barrier
- half-bat
- half-bath
- half bath
- half bathroom
- halfbeak
- half bent
- half binding
- half-birthday
- half birthday
- half-blood
- half blood
- half-blooded
- half blue
- half board
- half boarder
- half-boiled
- half-boot
- half-bound
- half-brained
- half-breadth plan
- half-break
- half-bred
- half-breed
- half-broken
- half brother
- half-brother
- half brother-in-law
- half-built
- half bull
- half butt
- half cadence
- half-caf
- half cap
- half-caste
- half-cell
- half cell
- half cent
- half-century
- half-chair
- half-chance
- half-clammed
- halfcock
- half cock
- half cocked
- half-cocked
- half-colonel
- half columnar
- half court
- half-court
- halfcourt
- half-court line
- half-court violation
- half-cousin
- half-cracked
- half-crown
- half-cut
- half cut
- half day
- half dead
- half-dead
- half-deal
- half-decent
- half-decked
- half-demon
- half dime
- half-diminished seventh chord
- half-dollar
- half-door
- half-dozen
- half dozen
- half duplex
- half-duplex
- half eagle
- half-eaten
- half-edge
- half-elf
- half-elven
- half-embrace
- half empty
- half-equation
- halfer
- half-evergreen
- half-expect
- half-faced
- half fare
- half-finished
- half-first cousin
- half foot
- half forward
- half-frame
- half-free
- half-fuck
- halfful
- half full
- half gip
- half-gip
- half glove
- half-god
- half-graben
- half gross
- half-grown
- half-gyp
- half gyp
- half-half
- half-halt
- half-hardy
- halfhearted
- half-heartedly
- half-heartedness
- half hitch
- half-hitch
- half-holiday
- half hose
- half hour
- half-hourlong
- half-hourly
- half-human
- half-hunter
- half-identical
- halfie
- half-inch
- half inch
- half-integer
- half-integral
- half in the bag
- half-island
- half-jacket
- half-Jew
- half joe
- half-joke
- half joke
- half-jokingly
- half-kirtle
- half-landing
- half-length
- half-life
- halflife
- half-light
- half-line
- halfling
- half lit
- half-long
- half-long vowel
- half-marathon
- half-marathoner
- half-marrow
- half-mask
- half-mast
- half mast
- half measure
- half-measure
- halfmer
- half-metal
- half-metallic
- half-metallicity
- half-mile
- halfmonth
- half-monthly
- half moon
- half-moon
- half-mourning
- half murder
- half-naked
- half-natural
- half nelson
- half nephew
- half-nephew
- halfness
- half niece
- half-niece
- half-night stand
- half-noble
- half note
- half-one
- half-op
- half-open
- half-open file
- half-open interval
- half-orc
- half orphan
- half-orphan
- halfpace
- half page
- half-pant
- half-pass
- half-past-six
- half pay
- half-pie
- halfpike
- half-pike
- half-pint
- half pipe
- half-pipe
- halfplanar
- half-plane
- half-plate
- half polluted
- half-port
- half-pounder
- half price
- half-price
- half-rate
- half-ray
- half-reaction
- half-read
- half-relaxation time
- half-relief
- half-rep
- half rest
- half rhyme
- Halfrican
- halfro
- half-rocked
- half-round
- half round
- half-royal
- half seas over
- half-seen
- half shaft
- half shell
- half shift
- half-shower
- half-sib
- half sib
- half-sibling
- half-sibling-in-law
- half-sider
- halfsie
- halfsies
- half-sighted
- half-silvered mirror
- half sister
- half-sister
- half sister-in-law
- half slip
- half-smile
- half smile
- half sovereign
- half space
- halfspace
- half stack
- half staff
- half-staff
- half-standard
- half step
- half-step
- half-strained
- half-suit
- half-swastika
- half-term
- half term
- half the battle
- half the story
- half tide
- half-tide
- half-timber
- half-timbering
- half-time
- half time
- half-timer
- half tint
- half-tint
- half-title
- half title
- half-tone
- half tone
- half-track
- half-tracked
- half-tracker
- half-truth
- half truth
- half-turn
- half-uncle
- half undern
- half-unicorn
- half-up half-down
- half-value thickness
- half viaduct
- half-virgin
- half-volley
- half volley
- half-waking
- halfwave
- half-waxen
- half-wheel
- half-width
- halfwidth
- half-wild
- half-Windsor
- half-wit
- half-witch
- half-witted
- half-wittedly
- half-wizard
- halfword
- half year
- half-year
- half-yearly
- half-zip
- jury of half-tongue
- knowing is half the battle
- like one o'clock half struck
- listen with half an ear
- maternal half aunt
- maternal half-uncle
- one and a half
- one-and-a-half-spaced
- one half
- one-half
- on the half hour
- open half space
- paternal half aunt
- paternal half-uncle
- rear admiral lower half
- saw the baby in half
- second-half
- see the glass half-empty
- see the glass half-full
- see with half an eye
- shared sorrow is half sorrow
- show half ball
- the candle that burns twice as bright burns half as long
- well begun is half done
- you can't be half pregnant
派生した語
副詞
half (not comparable)
- In two equal parts or to an equal degree.
- In some part approximating a half.
- Partially; imperfectly.
-
half-colored
-
- Practically, nearly.
-
c. 1587–1588 (date written), [Christopher Marlowe], Tamburlaine the Great. […] The First Part […], 2nd edition, part 1, London: […] [R. Robinson for] Richard Iones, […], published 1592, →OCLC; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire; London: Scolar Press, 1973, →ISBN, Act II, scene v:
-
使用する際の注意点
同意語
- (partially; imperfectly): halfly (obsolete)
派生語
参考
動詞
half (third-person singular simple present halves, present participle halving, simple past and past participle halved)
- (transitive, obsolete except nonstandard) To halve.
前置詞
half
使用する際の注意点
In English, the first sense (half past) is the only sense in current use. The second sense (half-hour before) is almost exclusively used in reference to other cultural or linguistic backgrounds where a similar usage exists.
参照
語源
From 古期英語 healf, half, from Proto-West Germanic *halb, from Proto-Germanic *halbaz.
名詞
形容詞
half
- half
別の表記
- healf (Early Middle English)
副詞
half
- half
別の表記
参照
- “half, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
- “half, adj.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
- “half, adv.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
half-
出典:『Wiktionary』 (2026/02/26 16:33 UTC 版)
語源
From 中期英語 half-, from 古期英語 healf-, from Proto-Germanic *halba- (“half-”), from *halbaz (“half”). Cognate with Dutch half- (“half-”), German halb- (“half-”), Swedish halv- (“half-”), Icelandic hálf- (“half-”). More at half.
接頭辞
half-
- half or partial; not complete
- Used before brother, sister, uncle, aunt, and so forth, to indicate that the person being identified is related only through one parent, grandparent, and so forth, rather than two.
使用する際の注意点
Can be used to describe an exact half like in half-filled or half-price but can also be used in a more loose sense, for example half-awake/half-asleep (awake but not fully alert) or half-decent (somewhat less than decent).
派生語
half-angel
half-ball
half-bat
half-deal
half-demon
half-halt
half-hunter
half-identical
half-jacket
half-monthly
half-ray
half-read
half-rep
half-royal
halfsleep
half-waxen
half-witch
half-wizard
Weblio例文辞書
half
1
例文
例文
3
例文
4
〜に次ぐ
例文
semi-
5
〜に準ずる
例文
semi-
6
ドゥミ・ポワーント
例文
half 5
例文
half-soled
14
半分くれ
15
半分くれ
例文
16
半分くれ
例文
Give me half!
17
半分くれ
例文
例文
the latter half
例文
the latter half
21
例文
例文
a half-timer
26
27
28
例文
the middle piece
Weblio例文辞書はプログラムで機械的に意味や英語表現を生成しているため、不適切な項目が含まれていることもあります。ご了承くださいませ。
名詞の変化形：
|
- Copyright (c) 1995-2026 Kenkyusha Co., Ltd. All rights reserved.
- Copyright © Benesse Holdings, Inc. All rights reserved.
- © 2000 - 2026 Hyper Dictionary, All rights reserved
- Copyright (C) 1994- Nichigai Associates, Inc., All rights reserved.
- All Rights Reserved, Copyright © Japan Science and Technology Agency
- 北里大学医療衛生学部 医療情報学研究室編集 医学用語集
- ※この記事は「北里大学医療衛生学部 医療情報学研究室」ホームページ内の「医学用語集」(2001.06.10. 改訂)の情報を転載しております。
- Copyright (C) 2026 ライフサイエンス辞書プロジェクト
- 日本語ワードネット1.1版 (C) 情報通信研究機構, 2009-2010 License All rights reserved.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved. License
- Copyright(C)2002-2026 National Institute of Information and Communications Technology. All Rights Reserved.
- Copyright (C) 1994- Nichigai Associates, Inc., All rights reserved.
「斎藤和英大辞典」斎藤秀三郎著、日外アソシエーツ辞書編集部編
- Wiktionary
- Text is available under Creative Commons Attribution-ShareAlike (CC-BY-SA) and/or GNU Free Documentation License (GFDL).
Weblio英和・和英辞典に掲載されている「Wiktionary英語版」の記事は、Wiktionaryのhalf (改訂履歴)、half- (改訂履歴)の記事を複製、再配布したものにあたり、Creative Commons Attribution-ShareAlike (CC-BY-SA)もしくはGNU Free Documentation Licenseというライセンスの下で提供されています。
- CMUdict
- CMUdict is Copyright (C) 1993-2008 by Carnegie Mellon University.
