一 yī

1. yī number one
   Domain: Modern Chinese 现代汉语 , Subdomain: Quantity
   Notes: In this sense, 一 is used in counting items (Guoyu '一' n 1; Kroll 2015 '一' 1, p. 540; NCCED '一' 1; Ho 2002, '一' 1; Rouzer 2007; p. 14). For example, 一个中心 'one center.' (Xinhua Net, 2015-12-25) Tone sandhi 变调 modifies yī to yì when it is followed by a first, second or third tone. For example, 一年 yì nián 'one year'. Also, yī becomes yì when it is followed by a fourth tone. For exmaple, 一条 yì tiáo 'one strand' (Sun 2006, loc. 545). 一 is the 2nd most common word in the 1985 Beijing Language Insititue frequency wordlist (Ho 2002, '一').
2. yī noun Kangxi radical 1
   Domain: Modern Chinese 现代汉语 , Subdomain: Radicals
   Notes: (ABC back cover; GHC p. 7)
3. yī adverb as soon as; all at once
   Domain: Modern Chinese 现代汉语 , Concept: Correlative 关联词
   Notes: This adverb is often used as a connecting word in the subordinate clause of subordinate complex sentences. It is often used in the pattern 一…，就… to express that if a certain condition is met the result will surely follow (Guoyu '一' adv 1; Kroll 2015 '一' 4, p. 540; NCCED '一' 9; Ho 2002, '一' 2; Li Shaoqi, 2003, pp. 194-195). For example, 一出来，才晓得自己的错误 'As soon as he came out, he realized his own mistake.' (Lao She, 2003, p. 260)
4. yī adjective pure; concentrated
   Domain: Modern Chinese 现代汉语
   Notes: (Guoyu '一' adj 3; Kroll 2015 '一' 2, p. 540; NCCED '一' 4)
5. yì adverb whole; all
   Domain: Modern Chinese 现代汉语
   Notes: In this sense, 一 is placed in front of nouns to indicate a complete unit (Guoyu '一' adj 4; Kroll 2015 '一' 3, p. 540; NCCED '一' 3; Ho 2002, '一' 3). For example, 一冬天 'throughout the whole winter.' (Lao She, 2003, p. 221)
6. yī ordinal first
   Domain: Modern Chinese 现代汉语 , Subdomain: Quantity
   Notes: (Rouzer 2007; p. 14)
7. yī adjective the same
   Domain: Modern Chinese 现代汉语
   Notes: In the sense of 一样 (Guoyu '一' adj 2; Kroll 2015 '一' 2b, p. 540; NCCED '一' 2)
8. yī adverb each
   Domain: Modern Chinese 现代汉语
   Notes: In the sense of 每 (Guoyu '一' adv 5; NCCED '一' 5)
9. yī pronoun certain
   Domain: Modern Chinese 现代汉语
   Notes: (NCCED '一' 6)
10. yī adverb throughout
    Domain: Modern Chinese 现代汉语
    Notes: (NCCED '一' 8) For example, 前前后后的一想 'thought about it for a while.' (Lao She, 2003, p. 218; Li Shaoqi, 2003, pp. 195)
11. yī adverb used in between a reduplicated verb
    Domain: Modern Chinese 现代汉语
    Notes: (Guoyu '一' adv 6; NCCED '一' 10) For example, 烤一烤 'heat up.' (Lao She, 2003, p. 216)
12. yī adjective sole; single
    Domain: Modern Chinese 现代汉语
    Notes: (Guoyu '一' adj 1; Kroll 2015 '一' 1a, p. 540)
13. yī adjective a very small amount
    Domain: Modern Chinese 现代汉语
    Notes: (Kroll 2015 '一' 1b, p. 540)
14. yī proper noun Yi
    Domain: Modern Chinese 现代汉语 , Subdomain: Names , Concept: Surname 姓氏
    Notes: (Guoyu '一' n 2)
15. yī adjective other
    Domain: Literary Chinese 文言文
    Notes: (Guoyu '一' n 7)
16. yī verb to unify
    Domain: Literary Chinese 文言文
    Notes: (Guoyu '一' v)
17. yī verb accidentally; coincidentally
    Domain: Literary Chinese 文言文
    Notes: In the sense of 偶然 (Guoyu '一' adv 2)
18. yī verb abruptly; suddenly
    Domain: Literary Chinese 文言文
    Notes: In the sense of 偶然 (Guoyu '一' adv 3)
19. yī conjunction or
    Domain: Literary Chinese 文言文
    Notes: In the sense of 或 (Guoyu '一' conj)

Contained in

• 一望无垠(一望無垠) to stretch as far as the eye can see
• 中一 seventh grade
• 威凤一羽(威鳳一羽) one phoenix feather; a glimpse that reveals the whole
• 一己 oneself
• 一辞莫赞(一辭莫贊) left speechless
• 有一套 to have a skill; to be savvy; to know how to do sth
• 不一致字(不一致字) inconsistent phonogram(s)
• 一溜烟(一溜煙) like a wisp of smoke; (to disappear etc) in an instant
• 一九四一年 1941
• 名噪一时(名噪一時) to achieve fame among one's contemporaries; temporary or local celebrity
• 缺一不可 not a single one is dispensable; can't do without either
• 一百 one hundred
• 一口吃不成胖子 you cannot get fat with only one mouthful; learn to walk before you run
• 一路顺风(一路順風) have a pleasant journey
• 闻一知十(聞一知十) to hear one and know ten; explain one thing and (he) understands everything; a word to the wise
• 一山不容二虎 the mountain can't have two tigers; this town ain't big enough for the two of us; (of two rivals) to be fiercely competitive
• 一无是处(一無是處) not one good point; everything about it is wrong
• 一语双关(一語雙關) to make a pun; to have a double meaning; double entendre
• 每年一度 once a year (every year)
• 空无一人(空無一人) not a soul in sight
• 一言为定(一言為定) it is a deal; it is settled then
• 藐视一切(藐視一切) to look down upon everything
• 一九六一年 1961
• 一闪而过(一閃而過) to flash past; to flit by
• 一炮打响(一炮打響) to win instant success; to start off successfully
• 一阵雨(一陣雨) a burst of rain
• 一百一 faultless; impeccable
• 千军易得，一将难求(千軍易得，一將難求) Easy to raise an army of one thousand, but hard to find a good general.
• 假一赔十(假一賠十) if one is fake, I shall compensate you for ten of them; (of goods) 100% genuine
• 第一线(第一線) first line; frontline
• 一言为重(一言為重) each word carries weight; a promise must be kept
• 第一例 first case; first instance; first time
• 性同一性障碍(性同一性障礙) gender identity disorder
• 一部 radical one
• 三七二十一 three sevens are twenty-one; the facts of the matter; the actual situation
• 一盘散沙(一盤散沙) a tray of loose sand; people not acting together
• 一穷二白(一窮二白) impoverished; backward both economically and culturally
• 万无失一(萬無失一) absolutely safe
• 一二书(一二書) written down one-by-one
• 一曝十寒 one day of sun and ten days of cold weather; short of a sustained effort
• 一九九三年 1993
• 一五一十 count by fives and tens; to narrate systematically and in full detail
• 一霎间(一霎間) in a flash
• 穿一条裤子(穿一條褲子) (of male friends) to have been through thick and thin together; to be like family
• 两虎相争，必有一伤(兩虎相爭，必有一傷) if two tigers fight, one will get injured; if you start a war, someone is bound to get hurt
• 一蹴而得 to get there in one step; easily done; success at a stroke; to get results overnight
• 同一个世界，同一个梦想(同一個世界，同一個夢想) One world - one dream, motto of 2008 Beijing Olympic games

Also contained in

亨利一世 、 台湾省立台北第一商业学校 、 一地 、 查士丁尼一世

Word is mentioned most frequently in

Truncated for common words

• 卷二百〇六 志第一百五十九 藝文五 Volume 206 Treatises 159: Arts and Literature 5 History of Song 宋史 — count: 853
• 卷二百〇五 志第一百五十八 藝文四 Volume 205 Treatises 158: Arts and Literature 4 History of Song 宋史 — count: 677
• 卷34　志第29 經籍三 Volume 34 Treatises 29: Bibliography 3 Book of Sui 隋書 — count: 665
• 卷二百〇七 志第一百六十 藝文六 Volume 207 Treatises 160: Arts and Literature 6 History of Song 宋史 — count: 660
• 卷八十五　志第三十五: 　百官一 Volume 85 Treatises 38: Official Posts 1 History of Yuan 元史 — count: 566
• 卷五十九　　　　志第四十九　　藝文三 Volume 59 Treatises 55: The Arts 3 New Book of Tang 新唐書 — count: 557
• 卷二百〇八 志第一百六十一 藝文七 Volume 208 Treatises 161: Arts and Literature 7 History of Song 宋史 — count: 552
• 卷八十七　志第三十七: 　百官三 Volume 87 Treatises 40: Official Posts 3 History of Yuan 元史 — count: 510
• 卷35　志第30 經籍四 Volume 35 Treatises 30: Bibliography 4 Book of Sui 隋書 — count: 492
• 卷四十四 志第二十四: 職官三 Volume 44 Treatises 24: Government Service 3 Old Book of Tang 舊唐書 — count: 463

Collocations

• 一人 (一人) 繫一人之本 — The Book of Songs 詩經, 序 Preface — count: 56
• 一章 (一章) 一章三句 — The Book of Songs 詩經, 國風‧召南‧行露 Lessons from the states - Odes Of Shao And The South - Xing Lu — count: 51
• 予一 (予一) 爾尚輔予一人致天之罰 — Book of Documents 尚書, 商書 湯誓 Shang Shu - Speech of Tang — count: 25
• 一作 (一作) 一作冡宰 — The Book of Songs 詩經, 小雅‧節南山之什‧十月之交 Minor odes of the kingdom - Jie Nan Shan Zhi Shen - Shi Yue Zhi Jiao — count: 17
• 一年 (一年) 十有一年 — The Commentary of Zuo on the Spring and Autumn Annals 春秋左氏傳, 隱公 Lord Yin — count: 11
• 一曰 (一曰) 一曰風 — The Book of Songs 詩經, 序 Preface — count: 10
• 美一 (美一) 有美一人 — The Book of Songs 詩經, 國風‧鄭‧野有蔓草 Lessons from the states - Odes of Zheng - Ye You Man Cao — count: 5
• 一国 (一國) 是以一國之事 — The Book of Songs 詩經, 序 Preface — count: 5
• 一夫 (一夫) 一夫不獲 — Book of Documents 尚書, 商書 說命下（僞） Shang Shu - Charge to Yue III (forged) — count: 4
• 弓一 (弓一) 彤弓一 — Book of Documents 尚書, 周書 文侯之命 Zhou Shu - Charge to the Marquis Wen — count: 4