| 1 | 快 | 快 | kuài | kuai4 | rapid; quick; speed; rate; soon; almost; to make haste; clever; sharp (of knives or wits); forthright; plainspoken; gratified; pleased; pleasant | | |
| 2 | 很快 | 很快 | hěn kuài | hen3 kuai4 | quickly | | |
| 3 | 加快 | 加快 | jiā kuài | jia1 kuai4 | to accelerate; to speed up | | |
| 4 | 愉快 | 愉快 | yú kuài | yu2 kuai4 | cheerful; cheerily; delightful; pleasant; pleasantly; pleasing; happy; delighted | | |
| 5 | 赶快 | 趕快 | gǎn kuài | gan3 kuai4 | at once; immediately | | |
| 6 | 快乐 | 快樂 | kuài lè | kuai4 le4 | happy; merry | | |
| 7 | 快速 | 快速 | kuài sù | kuai4 su4 | fast; high-speed; rapid | | |
| 8 | 尽快 | 盡快 | jìn kuài | jin4 kuai4 | see 尽快 | | |
| 9 | 尽快 | 儘快 | jǐn kuài | jin3 kuai4 | as quickly as possible; as soon as possible; with all speed; as quickly as possible; as soon as possible; with all speed | | |
| 10 | 痛快 | 痛快 | tòng kuài | tong4 kuai4 | delighted; to one's heart's content; straightforward; also pr. [tong4 kuai5] | | |
| 11 | 快要 | 快要 | kuài yào | kuai4 yao4 | almost; nearly; almost all | | |
| 12 | 快活 | 快活 | kuài huo | kuai4 huo5 | happy; cheerful | | |
| 13 | 不快 | 不快 | bù kuài | bu4 kuai4 | unhappy; in low spirits; (of a knife) not sharp | | |
| 14 | 快慢 | 快慢 | kuài màn | kuai4 man4 | speed | | |
| 15 | 飞快 | 飛快 | fēi kuài | fei1 kuai4 | very fast; at lightning speed; (coll.) razor-sharp | | |
| 16 | 欢快 | 歡快 | huān kuài | huan1 kuai4 | cheerful and lighthearted; lively | | |
| 17 | 快感 | 快感 | kuài gǎn | kuai4 gan3 | pleasure; thrill; delight; joy; pleasurable sensation; a high | | |
| 18 | 快步 | 快步 | kuài bù | kuai4 bu4 | quick step | | |
| 19 | 轻快 | 輕快 | qīng kuài | qing1 kuai4 | light and quick; brisk; spry; lively; effortless; relaxed; agile; blithe | | |
| 20 | 快闪存储器 | 快閃存儲器 | kuài shǎn cún chǔ qì | kuai4 shan3 cun2 chu3 qi4 | (computing) flash memory | | |
| 21 | 快闪党 | 快閃黨 | kuài shǎn dǎng | kuai4 shan3 dang3 | flash mobbers | | |
| 22 | 快闪 | 快閃 | kuài shǎn | kuai4 shan3 | to depart as quick as a flash; flash mob | | |
| 23 | 快煮壶 | 快煮壺 | kuài zhǔ hú | kuai4 zhu3 hu2 | electric kettle (Tw) | | |
| 24 | 快闪记忆体盘 | 快閃記憶體盤 | kuài shǎn jì yì tǐ pán | kuai4 shan3 ji4 yi4 ti3 pan2 | (computing) flash drive; thumb drive | | |
| 25 | 萝卜快了不洗泥 | 蘿蔔快了不洗泥 | luó bo kuài le bù xǐ ní | luo2 bo5 kuai4 le5 bu4 xi3 ni2 | when radishes are selling fast, one doesn't take the time to wash the soil off them (idiom); fig. when business is booming, merchants tend to offer goods of inferior quality | | |