# 快

| 快 | U+5FEB, &#24555; CJK UNIFIED IDEOGRAPH-5FEB |
| ← 忪 [U+5FEA] | CJK Unified Ideographs | 忬 → [U+5FEC] |

## Translingual
### Han character

快 (Kangxi radical 61, 心+4, 7 strokes, cangjie input 心木大 (PDK), four-corner 9503$_0$, composition ⿰忄夬)

#### Derived characters

* 𫪎, 𢭴, 𧋿, 𮛞, 𭧚, 𭝞, 𪬭, 𬜴, 筷

#### References

* Kangxi Dictionary: page 377, character 29
* Dai Kanwa Jiten: character 10369
* Dae Jaweon: page 705, character 16
* Hanyu Da Zidian (first edition): volume 4, page 2278, character 11
* Unihan data for U+5FEB

## Chinese
### Glyph origin

| | Old Chinese |
| 袂 | *mɡʷeds |
| 夬 | *kʷraːds |
| 快 | *kʰʷraːds |
| 駃 | *kʰʷraːds, *kʷeːd |
| 筷 | *kʰʷraːds |
| 炔 | *kʷeːds |
| 觖 | *kʰʷeds, *kʷeːd |
| 缺 | *kʰʷed, *kʰʷeːd |
| 蒛 | *kʰʷed |
| 吷 | *qʰʷed |
| 妜 | *qʷed, *qʷeːd |
| 決 | *kʷeːd, *qʰʷeːd |
| 訣 | *kʷeːd |
| 抉 | *kʷeːd, *qʷeːd |
| 玦 | *kʷeːd |
| 芵 | *kʷeːd |
| 赽 | *kʷeːd |
| 鴂 | *kʷeːd |
| 鈌 | *kʷeːd |
| 决 | *kʷeːd |
| 疦 | *kʷeːd, *qʰʷeːd |
| 蚗 | *kʷeːd |
| 趹 | *kʷeːd |
Phono-semantic compound (形聲／形声, OC *kʰʷraːds) : semantic 忄 + phonetic 夬 (OC *kʷraːds).

### Etymology

Unknown (Schuessler, 2007).

### Pronunciation

* Mandarin
    (Standard)
       (Pinyin): kuài (kuai$^4$)
       (Zhuyin): ㄎㄨㄞˋ
    (Chengdu, Sichuanese Pinyin): kuai$^4$
    (Xi'an, Guanzhong Pinyin): kuāi
    (Nanjing, Nanjing Pinyin): kuāi
    (Dungan, Cyrillic and Wiktionary): куэ (kue, III)
* Cantonese
    (Guangzhou–Hong Kong, Jyutping): faai$^3$
    (Dongguan, Jyutping++): faai$^3$
    (Taishan, Wiktionary): fai$^1$
* Gan (Wiktionary): kuai$^3$
* Hakka
    (Sixian, PFS): khoai
    (Hailu, HRS): kuai$^ˇ$
    (Meixian, Guangdong): kuai$^4$
* Jin (Wiktionary): kuai$^3$
* Northern Min (KCR): kṳe̿
* Eastern Min (BUC): ká̤ / kuái
* Puxian Min (Pouseng Ping'ing): ke$^4$ / kue$^4$
* Southern Min
    (Hokkien, POJ): khoài / khùiⁿ / khòaⁿ / khòe
    (Teochew, Peng'im): kuai$^3$
    (Leizhou, Leizhou Pinyin): kuai$^3$ / kue$^3$
* Wu (Wugniu)
** (Northern): $^5$khua / $^5$khue / $^5$khuae / $^5$khuai / $^5$khuei
** (Jinhua): $^5$khua; $^5$khuae
* Xiang (Changsha, Wiktionary): kuai$^4$
* Mandarin
** (Standard Chinese)
*** Hanyu Pinyin: kuài
*** Zhuyin: ㄎㄨㄞˋ
*** Tongyong Pinyin: kuài
*** Wade–Giles: kʻuai$^4$
*** Yale: kwài
*** Gwoyeu Romatzyh: kuay
*** Palladius: куай (kuaj)
*** Sinological IPA : /kʰu̯aɪ̯⁵¹/
** (Chengdu)
*** Sichuanese Pinyin: kuai$^4$
*** Scuanxua Ladinxua Xin Wenz: kuai
*** Sinological IPA : /kʰuai²¹³/
** (Xi'an)
*** Guanzhong Pinyin: kuāi
*** Sinological IPA : /kʰuæ⁵⁵/
** (Nanjing)
*** Nanjing Pinyin: kuāi
*** Nanjing Pinyin (numbered): kuai$^4$
*** Sinological IPA : /kʰuɛ⁴⁴/
** (Dungan)
*** Cyrillic and Wiktionary: куэ (kue, III)
*** Sinological IPA : /kʰuɛ⁴⁴/
    (Note: Dungan pronunciation is currently experimental and may be inaccurate.)
* Cantonese
** (Standard Cantonese, Guangzhou–Hong Kong)
*** Jyutping: faai$^3$
*** Yale: faai
*** Cantonese Pinyin: faai$^3$
*** Guangdong Romanization: fai$^3$
*** Sinological IPA : /faːi̯³³/
** (Dongguan, Guancheng)
*** Jyutping++: faai$^3$
*** Sinological IPA : /fai³²/
** (Taishanese, Taicheng)
*** Wiktionary: fai$^1$
*** Sinological IPA : /fai³³/
* Gan
** (Nanchang)
*** Wiktionary: kuai$^3$
*** Sinological IPA : /kʰuai²¹³/
* Hakka
** (Sixian, incl. Miaoli and Neipu)
*** Pha̍k-fa-sṳ: khoai
*** Hakka Romanization System: kuai
*** Hagfa Pinyim: kuai$^4$
*** Sinological IPA: /kʰu̯ai̯⁵⁵/
** (Hailu, incl. Zhudong)
*** Hakka Romanization System: kuai$^ˇ$
*** Sinological IPA: /kʰuai¹¹/
** (Meixian)
*** Guangdong: kuai$^4$
*** Sinological IPA: /kʰuaɪ⁵³/
* Jin
** (Taiyuan)
*** Wiktionary: kuai$^3$
*** Sinological IPA (old-style): /kʰuai⁴⁵/
* Northern Min
** (Jian'ou)
*** Kienning Colloquial Romanized: kṳe̿
*** Sinological IPA : /kʰyɛ³³/
* Eastern Min
** (Fuzhou)
*** Bàng-uâ-cê: ká̤ / kuái
*** Sinological IPA : /kʰɑ²¹³/, /kʰuɑi²¹³/
* ká̤ - vernacular;
* kuái - literary.
* Dialectal data
| Variety | Location | edit快 |
| Mandarin | Beijing | /kʰuai⁵¹/ |
| Mandarin | Harbin | /kʰuai⁵³/ |
| Mandarin | Tianjin | /kʰuai⁵³/ |
| Mandarin | Jinan | /kʰuɛ²¹/ |
| Mandarin | Qingdao | /kʰuɛ⁴²/ |
| Mandarin | Zhengzhou | /kʰuai³¹²/ |
| Mandarin | Xi'an | /kʰuai⁴⁴/ |
| Mandarin | Xining | /kʰuɛ²¹³/ |
| Mandarin | Yinchuan | /kʰuɛ¹³/ |
| Mandarin | Lanzhou | /kʰuɛ¹³/ |
| Mandarin | Ürümqi | /kʰuai²¹³/ |
| Mandarin | Wuhan | /kʰuai³⁵/ |
| Mandarin | Chengdu | /kʰuai¹³/ |
| Mandarin | Guiyang | /kʰuai²¹³/ |
| Mandarin | Kunming | /kʰuæ²¹²/ |
| Mandarin | Nanjing | /kʰuae⁴⁴/ |
| Mandarin | Hefei | /kʰue̞⁵³/ |
| Jin | Taiyuan | /kʰuai⁴⁵/ |
| Jin | Pingyao | /kʰuæ³⁵/ |
| Jin | Hohhot | /kʰuɛ⁵⁵/ |
| Wu | Shanghai | /kʰua³⁵/ |
| Wu | Suzhou | /kʰuɑ⁵¹³/ |
| Wu | Hangzhou | /kʰue̞⁴⁴⁵/ |
| Wu | Wenzhou | /kʰa⁴²/ |
| Hui | Shexian | /kʰua³²⁴/ |
| Hui | Tunxi | /kʰua⁴²/ |
| Xiang | Changsha | /kʰuai⁵⁵/ |
| Xiang | Xiangtan | /kʰuai⁵⁵/ |
| Gan | Nanchang | /kʰuai²¹³/ |
| Hakka | Meixian | /kʰuai⁵³/ |
| Hakka | Taoyuan | /kʰuɑi⁵⁵/ |
| Cantonese | Guangzhou | /fai³³/ |
| Cantonese | Nanning | /fai³³/ /wai³³/ |
| Cantonese | Hong Kong | /fai³³/ |
| Min | Xiamen (Hokkien) | /kʰuai²¹/ /kʰue²¹/ /kʰui²¹/ |
| Min | Fuzhou (Eastern Min) | /kʰuɑi²¹²/ |
| Min | Jian'ou (Northern Min) | /kʰuɛ³³/ |
| Min | Shantou (Teochew) | /kʰuai²¹³/ |
| Min | Haikou (Hainanese) | /xuai³⁵/ /xɔi³⁵/ /xue³⁵/ |
* Middle Chinese: khwaejH
Rime :
| Character | 快 |
| Reading # | 1/1 |
| Initial (聲) | 溪 (29) |
| Final (韻) | 夬 (30) |
| Tone (調) | Departing (H) |
| Openness (開合) | Closed |
| Division (等) | II |
| Fanqie | 苦夬切 |
| Baxter | khwaejH |
| Reconstructions ||
| Zhengzhang Shangfang | /kʰˠuai$^H$/ |
| Pan Wuyun | /kʰʷᵚai$^H$/ |
| Shao Rongfen | /kʰuai$^H$/ |
| Edwin Pulleyblank | /kʰwaɨjs$^H$/ |
| Li Rong | /kʰuai$^H$/ |
| Wang Li | /kʰwæi$^H$/ |
| Bernhard Karlgren | /kʰwai$^H$/ |
| Expected Mandarin Reflex | kuài |
| Expected Cantonese Reflex | faai$^3$ |
* Old Chinese
    (Baxter–Sagart): /*[k]ʷʰˤret-s/
    (Zhengzhang): /*kʰʷraːds/
Baxter–Sagart system 1.1 (2014) :
| Character | 快 |
| Reading # | 1/1 |
| Modern Beijing (Pinyin) | kuài |
| Middle Chinese | ‹ khwæj$^H$ › |
| Old Chinese | /*[k]ʷʰˁret-s/ |
| English | cheerful |
| Notes for Old Chinese notations in the Baxter–Sagart system: * Parentheses "" indicate uncertain presence; * Square brackets "" indicate uncertain identity, e.g. *[t] as coda may in fact be *-t or *-p; * Angle brackets "<>" indicate infix; * Hyphen "-" indicates morpheme boundary; * Period "." indicates syllable boundary. ||
Zhengzhang system (2003) :
| Character | 快 |
| Reading # | 1/1 |
| No. | 4407 |
| Phonetic component | 夬 |
| Rime group | 祭 |
| Rime subdivision | 1 |
| Corresponding MC rime | 快 |
| Old Chinese | /*kʰʷraːds/ |

### Definitions

快
* pleased; happy
    Synonym: 樂／乐 (lè)
    快感 ― kuàigǎn ― pleasure
    大快人心 ― dàkuàirénxīn ― to the great satisfaction of the people
* forthright; plainspoken
    心直口快 ― xīnzhíkǒukuài ― frank and outspoken
* rapid; quick; speedy; fast
    Synonym: 速 (sù)
       Shīfu, néng bùnéng zài kāi kuài yī diǎn? [Pinyin]
       Sir, can you please go faster?
    快啲啦！ [Cantonese] ― faai$^3$ di$^1$ laa$^1$! [Jyutping] ― Hurry up!
* (of knives, scissors, axes, etc.) sharp; sharp-edged
    Synonym: 鈍／钝 (dùn)
    把刀磨快 ― bǎ dāo mó kuài ― to sharpen the knife
    快刀斬亂麻／快刀斩乱麻 ― kuàidāozhǎnluànmá ― to cut the Gordian knot (literally, “to cut the messy ropes with a sharp knife”)
* keen; quick-witted
    反應快／反应快 ― fǎnyìng kuài ― quick in response
    腦子快／脑子快 ― nǎozǐ kuài ― quick-witted
* quickly; hurriedly
    快來幫忙！／快来帮忙！ ― Kuài lái bāngmáng! ― Come and help quickly!
* to be about to; almost
    我快到了。 ― Wǒ kuài dào le. ― I am about to arrive.
    快八點了。／快八点了。 ― Kuài bādiǎn le. ― It's almost 8.
* (of time zones) to be ahead of
    Antonym: 慢 (màn)
       hoeng$^1$ gong$^2$ faai$^3$ leon$^4$ deon$^1$ baat$^3$ go$^3$ zung$^1$. [Jyutping]
       Hong Kong is eight hours ahead of London.
* (dated Shanghainese) Used to indicate the near future tense.
       From: 2010, Qian Nairong, 《從〈滬語便商〉所見的老上海話時態》 (Tenses and Aspects? Old Shanghainese as Found in the Book Huyu Bian Shang)
       It's about to fall down.

#### Synonyms

* (quick):
* 快捷 (kuàijié) (fast and nimble)
* 快脆 (faai$^3$ ceoi$^3$) (Cantonese)
* 快迅 (kuai$^4$ sin$^4$) (Xiang)
* 快速 (kuàisù)
* 急 (jí)
* 急急 (jíjí) (literary)
* 急速 (jísù)
* 窸倏 (Hokkien)
* 緊快／紧快 (Xiamen Hokkien)
* 緊捷快／紧捷快 (Xiamen Hokkien)
* 緊氣／紧气 (Hokkien)
* 緊跤手／紧跤手 (Hokkien)
* 迅急 (xùnjí)
* 迅疾 (xùnjí) (literary)
* 迅速 (xùnsù)
* 長足／长足 (chángzú) (attributive, formal)
* 飛快／飞快 (fēikuài)
* 高速 (gāosù)
| Variety | Location | Words |
| Classical Chinese | Classical Chinese | 疾 |
| Formal (Written Standard Chinese) | Formal (Written Standard Chinese) | 快, 快速, 迅速 |
| Northeastern Mandarin | Beijing | 快 |
| Northeastern Mandarin | Taiwan | 快 |
| Northeastern Mandarin | Harbin | 快騰 |
| Northeastern Mandarin | Malaysia | 快 |
| Northeastern Mandarin | Singapore | 快 |
| Jilu Mandarin | Jinan | 快 |
| Central Plains Mandarin | Wanrong | 快 |
| Central Plains Mandarin | Xi'an | 快 |
| Southwestern Mandarin | Chengdu | 快, 快當, 快性 |
| Southwestern Mandarin | Wuhan | 快 |
| Southwestern Mandarin | Guiyang | 快, 快當 |
| Southwestern Mandarin | Guilin | 快 |
| Jianghuai Mandarin | Nanjing | 快, 𢜶 |
| Jianghuai Mandarin | Yangzhou | 快, 𢜶 |
| Jianghuai Mandarin | Hefei | 快, 𢜶 |
| Cantonese | Guangzhou | 快, 快脆 |
| Cantonese | Hong Kong | 快, 快脆 |
| Cantonese | Hong Kong (San Tin; Weitou) | 快 |
| Cantonese | Hong Kong (Ting Kok) | 快 |
| Cantonese | Hong Kong (Tung Ping Chau) | 快 |
| Cantonese | Zhongshan (Shiqi) | 快 |
| Cantonese | Taishan | 快, 快脆 |
| Cantonese | Dongguan | 快脆 |
| Cantonese | Qingyuan | 快 |
| Cantonese | Yangjiang | 快 |
| Cantonese | Danzhou | 快 |
| Cantonese | Kuala Lumpur (Guangfu) | 快 |
| Cantonese | Penang (Guangfu) | 快 |
| Cantonese | Singapore (Guangfu) | 快 |
| Gan | Nanchang | 快 |
| Gan | Lichuan | 快 |
| Gan | Pingxiang | 快 |
| Hakka | Meixian | 遽, 快 |
| Hakka | Xingning | 遽 |
| Hakka | Huidong (Daling) | 遽, 快 |
| Hakka | Shaoguan (Qujiang) | 䟐 |
| Hakka | Lianshan (Xiaosanjiang) | 急 |
| Hakka | Pinghe (Jiufeng) | 緊 |
| Hakka | Changting | 䟐 |
| Hakka | Wuping | 䟐 |
| Hakka | Wuping (Pingyu) | 遽, 䟐 |
| Hakka | Ninghua | 䟐 |
| Hakka | Yudu | 快 |
| Hakka | Ruijin | 遽 |
| Hakka | Shicheng | 快, 䟐 |
| Hakka | Shangyou (Shexi) | 快 |
| Hakka | Miaoli (N. Sixian) | 遽 |
| Hakka | Pingtung (Neipu; S. Sixian) | 遽 |
| Hakka | Hsinchu County (Zhudong; Hailu) | 遽 |
| Hakka | Taichung (Dongshi; Dabu) | 遽, 拚 |
| Hakka | Hsinchu County (Qionglin; Raoping) | 遽 |
| Hakka | Yunlin (Lunbei; Zhao'an) | 緊 |
| Hakka | Hong Kong | 快 |
| Hakka | Senai (Huiyang) | 遽 |
| Hakka | Kuching (Hepo) | 猛 |
| Hakka | Sungai Tapang, Batu Kawa (Hepo) | 猛 |
| Hakka | Singkawang | 猛 |
| Huizhou | Jixi | 快 |
| Jin | Taiyuan | 快 |
| Northern Min | Jian'ou | 快 |
| Northern Min | Songxi | 快 |
| Northern Min | Jianyang | 快 |
| Eastern Min | Fuzhou | 快, 猛 |
| Eastern Min | Gutian | 快 |
| Eastern Min | Ningde | 快 |
| Eastern Min | Zhouning | 快 |
| Eastern Min | Fuding | 快 |
| Southern Min | Xiamen | 緊 |
| Southern Min | Xiamen (Tong'an) | 緊 |
| Southern Min | Quanzhou | 緊 |
| Southern Min | Jinjiang | 緊 |
| Southern Min | Anxi | 緊 |
| Southern Min | Yongchun | 緊 |
| Southern Min | Zhangzhou | 猛, 緊 |
| Southern Min | Zhao'an | 猛, 兇 |
| Southern Min | Taipei | 緊 |
| Southern Min | Kaohsiung | 緊 |
| Southern Min | Tainan | 緊 |
| Southern Min | Penang (Hokkien) | 緊, 猛, 快 |
| Southern Min | Singapore (Hokkien) | 緊 |
| Southern Min | Manila (Hokkien) | 緊 |
| Southern Min | Longyan | 快 |
| Southern Min | Datian | 緊 |
| Southern Min | Chaozhou | 猛 |
| Southern Min | Shantou | 猛 |
| Southern Min | Shantou (Chenghai) | 猛 |
| Southern Min | Jieyang | 猛 |
| Southern Min | Haifeng | 猛 |
| Southern Min | Bangkok (Teochew) | 猛 |
| Southern Min | Johor Bahru (Teochew) | 猛 |
| Southern Min | Singapore (Teochew) | 猛 |
| Southern Min | Leizhou | 猛 |
| Southern Min | Wenchang | 猛, 快 |
| Southern Min | Haikou | 猛 |
| Southern Min | Qionghai | 快 |
| Southern Min | Singapore (Hainanese) | 猛 |
| Puxian Min | Putian | 緊 |
| Puxian Min | Xianyou | 緊 |
| Central Min | Yong'an | 烈 |
| Central Min | Sanming (Shaxian) | 烈 |
| Southern Pinghua | Nanning (Tingzi) | 快, 快當 |
| Shehua | Fu'an | 快 |
| Shehua | Fuding | 快 |
| Shehua | Luoyuan | 快 |
| Shehua | Shunchang | 快 |
| Shehua | Hua'an | 快 |
| Shehua | Guixi (Zhangping) | 快 |
| Shehua | Cangnan | 快 |
| Shehua | Jingning (Hexi) | 快 |
| Shehua | Lishui | 快 |
| Shehua | Longyou | 快 |
| Wu | Shanghai | 快, 𢜶 |
| Wu | Shanghai (Chongming) | 快 |
| Wu | Suzhou | 快, 𢜶 |
| Wu | Danyang | 快, 𢜶 |
| Wu | Hangzhou | 快 |
| Wu | Ningbo | 快 |
| Wu | Wenzhou | 快, 緊 |
| Wu | Jinhua | 快 |
| Xiang | Changsha | 快, 快迅 |
| Xiang | Shuangfeng | 快, 快迅 |
| Variety | Location | Words |
| Formal (Written Standard Chinese) | Formal (Written Standard Chinese) | 鋒利, 銳利 |
| Northeastern Mandarin | Beijing | 快 |
| Northeastern Mandarin | Taiwan | 利 |
| Northeastern Mandarin | Singapore | 利 |
| Jilu Mandarin | Jinan | 快 |
| Central Plains Mandarin | Xi'an | 快 |
| Southwestern Mandarin | Chengdu | 快 |
| Southwestern Mandarin | Wuhan | 快 |
| Jianghuai Mandarin | Yangzhou | 快 |
| Jianghuai Mandarin | Hefei | 快 |
| Cantonese | Guangzhou | 利 |
| Cantonese | Hong Kong | 利 |
| Cantonese | Hong Kong (San Tin; Weitou) | 快, 利 |
| Cantonese | Hong Kong (Ting Kok) | 利, 快 |
| Cantonese | Hong Kong (Tung Ping Chau) | 利, 快 |
| Cantonese | Taishan | 利 |
| Cantonese | Yangjiang | 利 |
| Gan | Nanchang | 快 |
| Hakka | Meixian | 利 |
| Hakka | Miaoli (N. Sixian) | 利 |
| Hakka | Pingtung (Neipu; S. Sixian) | 利 |
| Hakka | Hsinchu County (Zhudong; Hailu) | 利 |
| Hakka | Taichung (Dongshi; Dabu) | 利 |
| Hakka | Hsinchu County (Qionglin; Raoping) | 利 |
| Hakka | Yunlin (Lunbei; Zhao'an) | 利 |
| Hakka | Hong Kong | 快 |
| Jin | Taiyuan | 快 |
| Northern Min | Jian'ou | 利 |
| Eastern Min | Fuzhou | 利 |
| Southern Min | Xiamen | 利 |
| Southern Min | Tainan | 利 |
| Southern Min | Penang (Hokkien) | 利 |
| Southern Min | Chaozhou | 利 |
| Wu | Shanghai | 快 |
| Wu | Suzhou | 快 |
| Wu | Wenzhou | 快 |
| Xiang | Changsha | 快 |
| Xiang | Shuangfeng | 快 |

#### Antonyms

* 慢 (màn)

### Usage notes

* (Old Shanghainese): Unlike other Chinese languages, Northern Wu can mark for tenses as well as aspects. 快 is to be used behind the main verb, unlike most other grammatical particles.

### Compounds

* 一吐為快／一吐为快 (yītǔwéikuài)
* 不吐不快 (bùtǔbùkuài)
* 不快 (bùkuài)
* 不快活
* 不爽快
* 乘龍快婿／乘龙快婿 (chénglóng kuàixù)
* 乾脆爽快／干脆爽快
* 人人稱快／人人称快
* 人心大快
* 佳快
* 傳音快字／传音快字
* 儘快／尽快
* 先睹為快／先睹为快 (xiāndǔwéikuài)
* 兵快
* 利快
* 加快 (jiākuài)
* 加快腳步／加快脚步
* 勝任愉快／胜任愉快
* 勤快 (qínkuài)
* 口快
* 口快如刀
* 口快心直 (kǒukuàixīnzhí)
* 口舌之快
* 命快
* 嘴快
* 外快 (wàikuài)
* 外快子
* 大快
* 大快之事
* 大快人心 (dàkuàirénxīn)
* 大快朵頤／大快朵颐 (dàkuàiduǒyí)
* 對號快車／对号快车
* 山東快書／山东快书
* 平快車／平快车
* 府快
* 心直口快 (xīnzhíkǒukuài)
* 心直嘴快 (xīnzhízuǐkuài)
* 快事
* 快人 (kuàirén)
* 快人快語／快人快语
* 快件 (kuàijiàn)
* 快信 (kuàixìn)
* 快克 (kuàikè)
* 快刀斬亂麻／快刀斩乱麻 (kuàidāo zhǎn luànmá)
* 快動作／快动作
* 快印
* 快嘴
* 快報／快报 (kuàibào)
* 快婿 (kuàixù)
* 快心
* 快快當當／快快当当
* 快性
* 快感 (kuàigǎn)
* 快意 (kuàiyì)
* 快慰 (kuàiwèi)
* 快慢 (kuàimàn)
* 快手 (kuàishǒu)
* 快捷 (kuàijié)
* 快暢／快畅
* 快書／快书 (kuàishū)
* 快板 (kuàibǎn)
* 快槍／快枪
* 快樂／快乐 (kuàilè)
* 快樂丸／快乐丸 (kuàilèwán)
* 快樂主義／快乐主义 (kuàilè zhǔyì)
* 快步流星
* 快活 (kuàihuo)
* 快活三
* 快活林
* 快炮
* 快照 (kuàizhào)
* 快犢破車／快犊破车
* 快當／快当 (kuàidang)
* 快相
* 快碼倉頡／快码仓颉
* 快艇 (kuàitǐng)
* 快蟹船
* 快衝膠卷／快冲胶卷
* 快要 (kuàiyào)
* 快覽／快览
* 快訊／快讯 (kuàixùn)
* 快貨／快货
* 快車／快车 (kuàichē)
* 快車道／快车道 (kuàichēdào)
* 快速 (kuàisù)
* 快速帆船
* 快速麵／快速面
* 快遞／快递 (kuàidì)
* 快適／快适
* 快鍋／快锅 (kuàiguō)
* 快門／快门 (kuàimén)
* 快雪堂
* 快食麵／快食面
* 快餐 (kuàicān)
* 快馬加鞭／快马加鞭 (kuàimǎjiābiān)
* 快點／快点 (kuàidiǎn)
* 悒悒不快
* 愉快
* 手快 (shǒukuài)
* 手急眼快
* 打正快
* 拍手稱快／拍手称快
* 捕快 (bǔkuài)
* 搶快／抢快
* 敞快 (chǎngkuai)
* 明快 (míngkuài)
* 暢快／畅快 (chàngkuài)
* 東床快婿／东床快婿
* 東方快車／东方快车
* 歡快／欢快 (huānkuài)
* 步快
* 沉著痛快
* 涼快／凉快 (liángkuài)
* 淋漓痛快
* 濃快／浓快
* 熱得快／热得快
* 爽快 (shuǎngkuài)
* 疾快
* 痛快 (tòngkuài)
* 痛快淋漓 (tòngkuàilínlí)
* 痛痛快快
* 白快
* 皁快／皂快
* 盡快／尽快
* 眼明手快 (yǎnmíngshǒukuài)
* 眼疾手快
* 短平快 (duǎnpíngkuài)
* 稱心快意／称心快意
* 稱快／称快 (chēngkuài)
* 聯珠快書／联珠快书
* 脆快
* 脆快了當／脆快了当
* 能言快語／能言快语
* 親痛仇快／亲痛仇快 (qīntòngchóukuài)
* 買快／买快
* 賺外快／赚外快
* 趕快／赶快 (gǎnkuài)
* 軍牢快手／军牢快手
* 輕快／轻快 (qīngkuài)
* 連珠快書／连珠快书
* 鐵板快書／铁板快书
* 開快車／开快车
* 風快的刀／风快的刀
* 風流快活／风流快活
* 飛彈快艇／飞弹快艇
* 飛快／飞快 (fēikuài)
* 飛快車／飞快车
* 馬快／马快
* 馬快手／马快手
* 馬快頭／马快头
* 高談快論／高谈快论
* 鬆快／松快 (sōngkuai)
* 魚雷快艇／鱼雷快艇

## Japanese
### Kanji

(Fifth grade kyōiku kanji)

#### Readings

* Go-on: け (ke)
* Kan-on: かい (kai, Jōyō)
* Kun: こころよい (kokoroyoi, 快い, Jōyō)、うれしい (ureshii, 快しい)、はやい (hayai, 快い)

### Etymology

* Kanji in this term
* 快
* かい Grade: 5
* kan'on
From Middle Chinese 快 (MC khwaejH).

### Pronunciation

* (Tokyo) かい [káꜜì] (Atamadaka –)
* IPA: [ka̠i]

### Affix

快(かい) • (kai)
* pleasant, pleasing, comfortable, enjoyable
* fast, quick (in a pleasing way)
* sharp (of knives); clever (of wits)
* recovery (from illness, of health)

### Noun

快(かい) • (kai)
* (literary) pleasure; delight; enjoyment

### References

* ↑ Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN

## Korean
### Hanja

快 (eumhun 쾌할 쾌 (kwaehal kwae))
* This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.

## Vietnamese
### Han character

快: Hán Nôm readings: khoái, khuấy, khoáy, sướng
* This term needs a translation to English. Please help out and add a translation, then remove the text {{rfdef}}.