# 오

| 오 | U+C624, &#50724; HANGUL SYLLABLE O |
| Composition: | ㅇ + ㅗ |
| ← 옣 [U+C623] | Hangul Syllables | 옥 → [U+C625] |
오옥옦옧온옩옪 옫올옭옮옯옰옱 옲옳옴옵옶옷옸 옹옺옻옼옽옾옿 :
| 예 ← | → 와 |

## Korean
### Etymology 1

Sino-Korean word from 五 (“five”), from the Middle Korean reading 오〯 (Yale: wǒ), from Middle Chinese 五 (MC nguX).

#### Pronunciation

* (SK Standard/Seoul) IPA: [o̞(ː)]
* Phonetic hangul: [오(ː)]
** Though still prescribed in Standard Korean, most speakers in both Koreas no longer distinguish vowel length.

#### Numeral

오 • (o) (hanja 五)
* (Sino-Korean numeral) five

##### Usage notes

In modern Korean, numbers are usually written in Arabic numerals.
The Korean language has two sets of numerals: a native set of numerals inherited from Old Korean, and a Sino-Korean set which was borrowed from Middle Chinese in the first millennium C.E.
Native classifiers take native numerals.
* 개 한 마리 (gae han mari, “one dog”, native numeral)
* 나무 두 그루 (namu du geuru, “two trees”, native numeral)
Some Sino-Korean classifiers take native numerals, others take Sino-Korean numerals, while yet others take both.
* 종이 두 장(張) (jong'i du jang, “two sheets of paper”, native numeral)
* 이 분(分) (i bun, “two minutes”, Sino-Korean numeral)
* 서른/삼십 명(名) (seoreun/samsip myeong, “thirty people”, both sets possible)
Recently loaned classifiers generally take Sino-Korean numerals.
* 일 킬로미터 (il killomiteo, “one kilometer”, Sino-Korean numeral)
For many terms, a native numeral has a quantifying sense, whereas a Sino-Korean numeral has a sense of labeling.
* 세 반(班) (se ban, “three school classes”, native numeral)
* 삼 반(班) (sam ban, “Class Number Three”, Sino-Korean numeral)
When used in isolation, native numerals refer to objects of that number and are used in counting and quantifying, whereas Sino-Korean numerals refer to the numbers in a more mathematical sense.
* 하나만 더 주세요 (hana-man deo juse-yo, “Could you give me just one more, please”, native numeral)
* 일 더하기 일은? (il deohagi ir-eun?, “What's one plus one?”, Sino-Korean numeral)
While older stages of Korean had native numerals up to the thousands, native numerals currently exist only up to ninety-nine, and Sino-Korean is used for all higher numbers. There is also a tendency—particularly among younger speakers—to uniformly use Sino-Korean numerals for the higher tens as well, so that native numerals such as 일흔 (ilheun, “seventy”) or 아흔 (aheun, “ninety”) are becoming less common.

##### Derived terms

* See the hanja entry at 五 for Sino-Korean compounds of 오 (五, o).

### Etymology 2

Imitative. Compare English oh.

#### Pronunciation

* (SK Standard/Seoul) IPA: [o̞(ː)]
* Phonetic hangul: [오(ː)]
** Though still prescribed in Standard Korean, most speakers in both Koreas no longer distinguish vowel length.

#### Interjection

오 • (o)
* wow, whoa; used for a pleasant surprise, especially regarding something the listener has done or said.
    오, 좋다. ― O, jota. ― Whoa, nice.
    오, 기발한 생각이다. ― O, gibal-han saenggag-ida. ― Whoa, that's a brilliant idea.

### Etymology 3

Sino-Korean word from 伍 (“troop of five soldiers”).

#### Pronunciation

* (SK Standard/Seoul) IPA: [o̞(ː)]
* Phonetic hangul: [오(ː)]
** Though still prescribed in Standard Korean, most speakers in both Koreas no longer distinguish vowel length.

#### Noun

오 • (o) (hanja 伍)
* (military) rank of troops (row of soldiers side by side)
    Coordinate term: 열(列) (yeol, “file”)

##### Derived terms

* See the hanja entry at 伍 for Sino-Korean compounds of 오 (伍, o).
Derived terms with native elements:
* 오(伍)와 열(列) (o-wa yeol)

### Etymology 4

Sino-Korean word from 吳 (“Wu”).

#### Pronunciation

* (SK Standard/Seoul) IPA: [o̞]
* Phonetic hangul: [오]

#### Proper noun

오 • (O) (hanja 吳)
* [~나라] Wu, name of various Chinese kingdoms in the lower Yangzi region
* a common surname from Chinese

### Etymology 5

Borrowed from English o.

#### Pronunciation

* (SK Standard/Seoul) IPA: [o̞]
* Phonetic hangul: [오]

#### Noun

오 • (o)
* The name of the Latin-script letter O/o.

##### Coordinate terms

* Latin script letter names: 에이 (ei) · 비 (bi) · 씨 (ssi) · 디 (di) · 이 (i) · 에프 (epeu) · 쥐 (jwi) · 에이치 (eichi) · 아이 (ai) · 제이 (jei) · 케이 (kei) · 엘 (el) · 엠 (em) · 엔 (en) · 오 (o) · 피 (pi) · 큐 (kyu) · 알 (al) · 에스 (eseu) · 티 (ti) · 유 (yu) · 브이 (beu'i) · 더블유 (deobeuryu) · 엑스 (ekseu) · 와이 (wai) · 제드 (jedeu)/지 (ji)

### Etymology 6

Modern Korean reading of various Chinese characters.

#### Syllable

오 • (o)
* 吳: Wu kingdom
    (eumhun reading: 나라 이름 오 (nara ireum o)) (MC reading: 吳 (MC ngu))
* 五: five
    (eumhun reading: 다섯 오 (daseot o)) (MC reading: 五 (MC nguX))
* 汚: dirty
    (eumhun reading: 더러울 오 (deoreoul o)) (MC reading: 汚 (MC 'u))
* 午: daytime
    (eumhun reading: 낫 오 (nat o)) (MC reading: 午 (MC nguX))
* 誤: to err
    (eumhun reading: 그릇할 오 (geureut-hal o)) (MC reading: 誤 (MC nguH))
* 梧: parasol tree
    (eumhun reading: 오동나무 오 (odongnamu o)) (MC reading: 梧 (MC ngu))
* 悟: Enlightenment
    (eumhun reading: 깨달음 오 (kkaedareum o)) (MC reading: 悟 (MC nguH))
* 娛: to rejoice
    (eumhun reading: 즐거워할 오 (jeulgeowo-hal o)) (MC reading: 娛 (MC ngju|nguH))
* 烏: crow
    (eumhun reading: 까마귀 오 (kkamagwi o)) (MC reading: 烏 (MC 'u))
* 伍: five people
    (eumhun reading: 다섯 사람 오 (daseot saram o)) (MC reading: 伍 (MC nguX))
* 旿: bright
    (eumhun reading: 밝을 오 (balgeul o)) (MC reading: 旿 (MC nguX))
* 奧: deep
    (eumhun reading: 깊을 오 (gipeul o)) (MC reading: 奧 (MC 'awH))
* 鰲: turtle
    (eumhun reading: 자라 오 (jara o)) (MC reading: 鰲 (MC ngaw))
* 晤: to meet
    (eumhun reading: 만날 오 (mannal o)) (MC reading: 晤 (MC nguH))
* 傲: arrogant
    (eumhun reading: 거만할 오 (geoman-hal o)) (MC reading: 傲 (MC ngawH))
* 嗚: to lament
    (eumhun reading: 탄식할 오 (tansik-hal o)) (MC reading: 嗚 (MC 'u))
* 墺: riverside
    (eumhun reading: 물가 오 (mulga o)) (MC reading: 墺 (MC 'awH))
* 吾: I; me
    (eumhun reading: 나 오 (na o)) (MC reading: 吾 (MC ngu|ngae))
* 蜈: centipede
    (eumhun reading: 지네 오 (jine o)) (MC reading: 蜈 (MC ngu))
* 寤: to awake
    (eumhun reading: 잠 깰 오 (jam kkael o)) (MC reading: 寤 (MC nguH))
* 獒: dog
    (eumhun reading: 개 오 (gae o)) (MC reading: 獒 (MC ngaw))
* 惡: to hate
    (eumhun reading: 미워할 오 (miwo-hal o)) (MC reading: 惡 (MC 'uH))
* 俉: to meet
    (eumhun reading: 맞이할 오 (maji-hal o)) (MC reading: 俉)
* 塢: embankment
    (eumhun reading: 둑 오 (duk o)) (MC reading: 塢 (MC 'uX))
* 懊: to resent
    (eumhun reading: 한할 오 (han-hal o)) (MC reading: 懊 (MC 'awX))
* 敖: arrogant
    (eumhun reading: 거말할 오 (geomal-hal o)) (MC reading: 敖 (MC ngaw))
* 澳: deep
    (eumhun reading: 깊을 오 (gipeul o)) (MC reading: 澳 (MC 'awH))
* 熬: to stir-fry
    (eumhun reading: 볶을 오 (bokkeul o)) (MC reading: 熬 (MC ngaw))
* 筽: hamper
    (eumhun reading: 버들고리 오 (beodeulgori o)) (MC reading: 筽)
* 鼇: Alternative form of 鰲
    (eumhun reading: 자라 오 (jara o)) (MC reading: 鼇 (MC ngaw))
* 仵: pair
    (eumhun reading: 짝 오 (jjak o)) (MC reading: 仵 (MC nguX))
* 唔: sound of reading
    (eumhun reading: 글 읽는 소리 오 (geul ingneun sori o)) (MC reading: 唔)
* 嗷: clamor
    (eumhun reading: 시끄러울 오 (sikkeureoul o)) (MC reading: 嗷 (MC ngaw))