(比較なし)
1
 a 本当に，実際に.
 b [疑問文で; no の答えを期待して] 本当に，実際に.
 c [否定文で; 表現をやわらげて] 本当に[まったく](…というわけではない) 《★【用法】 really は not の後にくる》.
 d [ought to，should を強調して] より正しくは，本当は.
2 [文全体を修飾して] 実際には，実のところ，実際.
3 [強意的に] まったく，確かに，実に.
4 [間投詞的に用いて，軽い驚き・疑い・非難を表わして] ほう，へえ，おや.

音節re･al･ly発音記号・読み方ríː(ə)li|rɪ́əli本当に▷1
本当は▷2
実のところ▷3
まったく▷4a
1本当に，実際に，実に

･It's really a beautiful day. 本当にいい天気だ  ･He really is a good baseball player, isn't he? 彼は実にいい野球選手だね（通例be動詞の後に置かれるが，be動詞の前に置かれるとより強意を表す）

2本当は，実際は，実は

･Susan didn't really like the present she got, but she pretended to be pleased. スーザンはもらったプレゼントが本当は気に入らなかったが，喜んでいるふりをした  ･That restaurant looks expensive but it's really cheap. そのレストランは高そうだが，実は安い  ･Randy isn't really bright. ランディーは（実は）それほど聡明ではない（否定をやわらげた表現）

3((文全体を修飾して))実のところ，実際

･Really, that's all we know. 実際私たちが知っていることはそれだけなのです  ･It doesn't make much difference, really. あまり関係ないですよね，実のところ

4a((形容詞・副詞を強調して))まったく，本当に，実に，
とても

･really pure white まったくの純白  ･It has been a really cold winter. 本当に寒い冬だった  ･Jan was really intelligent as well as attractive. ジャンは魅力的であったばかりでなく実に知的だった

b((should, ought toを強めて))本当のところ（…すべきである）

･You should really thank her. 本当のところ君は彼女に感謝すべきだ（語順に注意）

5((間投詞的に))aへえ，本当に，まさか（会話中で相づちまたは興味・疑い・驚きなどを表す）

･“I saw them dating.”“Oh, really?” 「彼らがデートしているところを見たよ」「へえ，ほんとかい」

b((おもに米))その通り，まったくだ（賛同を表す）

･“That's a good restaurant, but it's too expensive.”“Yeah, really! ”「あれはいいレストランだけど，高すぎるよ」「うん，まったくだ」

成句Not really!
（驚いて）まさか

･“Do you like him?”“Not really!” 「彼を好きなの?」「まさか」（語尾を下げて言うと「別に，それほどでも」と控えめな否定の答えにもなる）

成句really and truly
間違いなく，絶対に，本当に

･Einstein was really and truly a genius. アインシュタインは間違いなく天才だった

** 共起表現
現実に, 本当に
関連語
actual, genuine, practically, real, reality, substantive, true, truly

【副詞】
1
強意語として使われる
(used as intensifiers)

a really enjoyable evening 本当に楽しい晩

2
真実、事実または現実に従って
(in accordance with truth or fact or reality)

they don't really listen to us 彼らは私たちの言うことを全然聞かない

3
実は
(in fact)

really, you shouldn't have done it 本当に、あなたはそれをするべきでなかった

4
実際に
(in actual fact)
「really」に関する類語一覧

訳語 マジで；さも；やまやま；すごく

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訳語 リアリー

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訳語 そうなんですね

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訳語 本当にそうなのか；マジですか？；まぢで

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訳語 本気ですか

ホントに？

訳語 マジですか？

果して；真に；正に；元来；本当；全く；真実；本に；愈々；実際；何うも；実；真

何とも, 然も, 超, 果たして, 果して, 元来, 真逆, これまた, 全くもって, 全く以て, 本気で, 将, 当, なまら, そう, 如何にも, 実に, 實に, どうも, 普通, いと, 現に, ぶっちゃけ, 殆, 幾, めちゃくちゃ, 物, 本当に, 全く, 真実, 大概, 山々, 山山, 誠に, 真に, 寔に, 洵に, 卍, 卍字, 万字
関西弁せ

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真に, めちゃくちゃに, 内実は

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マジ卍, まじ卍, へぇ
大阪弁さよか

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嘘, 噓

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語源 1

From Middle English really, realy, rialliche, equivalent to real +‎ -ly.

発音

 ･(英国用法) IPA^(key): /ˈɹɪəlɪ/, /ˈɹɪəli/, /ˈɹɪːlɪ/, /ˈɹɪːli/
 ･(米国用法) IPA^(key): /ˈɹɪli/, /ˈɹili/, /ˈɹi.əli/
 ･Hyphenation: re‧al‧ly
 ･Rhymes: -iːli

副詞

really (comparative more really, superlative most really)
 ･(literally) In a way or manner that is real, not unreal.
 ･1751, John Roche, Moravian Heresy, page 168:

We are to believe that by an extraordinary Conception by Means of the holy Ghost he in an extraordinary MANNER, (unknown to us) really assumed Flesh, and was by her nourished in the Womb and in due Time born in a natural Manner, and that whilst on Earth he was really hungry, and dry, and eat and drank as really as other Men, without, any Deception of Sight in us or Delusion whatsoever.

 ･1878, Jonathan Baldwin Turner, Christ's Words as Related to Science,..., page 52:

If we take the phenomenal world as it strikes our senses, in all its varied and wonderful powers and aspects; as the mere symbol of the Divine Presence and power, that is, according to Christ, ever in, through, and over all, as really as are causal light, heat and gravity, or as really as our own life and souls pervade every atom of our bodies, [...]

 ･1975, Robin H. S. Boyd, An introduction to Indian Christian theology, page 48:

Thus Brahman must be described as ‘really real’, while a rope, or a person, or God Himself, is ‘unreally real’. And it is only the Vedantin who can distinguish the real from the unreal, for to others all seems real.

 ･(modal) Actually; in fact; in reality.

"He really is a true friend." / "Really? What makes you so sure?"


 ･(informal, as an intensifier) Very (modifying an adjective); very much (modifying a verb).

But ma, I really, really want to go to the show!


 ･1918, W. B. Maxwell, chapter 10, in The Mirror and the Lamp:

It was a joy to snatch some brief respite, and find himself in the rectory drawing–room. Listening here was as pleasant as talking; just to watch was pleasant. The young priests who lived here wore cassocks and birettas; their faces were fine and mild, yet really strong, like the rector's face; and in their intercourse with him and his wife they seemed to be brothers.


 ･1977, Agatha Christie, chapter 4, in An Autobiography, part II, London: Collins, →ISBN:





There was also hairdressing: hairdressing, too, really was hairdressing in those times — no running a comb through it and that was that. It was curled, frizzed, waved, put in curlers overnight, waved with hot tongs; […].

別の表記

 ･(in a way または manner that is real, not unreal): real-ly

使用する際の注意点

 ･Like its synonyms, really is, in practice, often used to preface an opinion, rather than a fact. (See also usage notes for actually.)

Increasingly people are recognising what's really important is having children.^[1]

同意語

 ･(actually): actually, in fact, indeed, truly; see also Thesaurus:actually
 ･(口語, as an intensifier): so

間投詞

really
 ･Indicating surprise at, or requesting confirmation of, some new information; to express skepticism.

A: He won the Nobel Prize yesterday.

B: Really?

 ･(colloquial, sarcastic, typically exaggerated question.) Indicating that what was just said was obvious and unnecessary; contrived incredulity

A: I've just been reading Shakespeare - he's one of the best authors like, ever!

B: Really.

 ･(colloquial, chiefly US) Indicating affirmation, agreement.

A: That girl talks about herself way too much.

B: Really. She's a nightmare.

 ･Indicating displeasure at another person's behaviour or statement.

Well, really! How rude.

同意語

 ･(contrived incredulity, または in ironic / sarcastic sense): you don't say, no kidding, oh really, no really

参照

 ･ ^ Marriner, C (15-01-2005), “The Sydney Morning Herald article 'When men turn clucky'”, in (Please provide the title of the work)‎^[1], The Sydney Morning Herald, retrieved 2009-04-12

語源 2

re- +‎ ally

動詞

really (三人称単数 現在形 reallies, 現在分詞 reallying, 過去形および過去分詞形 reallied)
 ･Alternative form of re-ally
 ･1917, German American Annals, page 69:

She wished since long to die and to be reallied with her children in heaven.

 ･1997, Warren F. Kuehl, Lynne Dunn, Keeping the Covenant: American Internationalists and the League of Nations, 1920-1939 (Kent State University Press, →ISBN), page 19:

Following the election, those who had publicly opposed Harding hastened to really themselves with Republicans who had remained in the party.

アナグラム

 ･rallye, y'all're, yaller

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語源

re- +‎ ally

動詞

re-ally (三人称単数 現在形 re-allies, 現在分詞 re-allying, 過去形および過去分詞形 re-allied)
 ･(transitive) To bring together again.

(Can we find かつ add a quotation of Edmund Spenser to this entry?)

 ･(transitive, intransitive) To ally anew; to re-form an alliance.

別の表記

 ･really

Further reading

 ･re-ally in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913

アナグラム

 ･rallye, y'all're, yaller