| 1 | 笃 | 篤 | dǔ | du3 | serious (illness); sincere; true | | |
| 2 | 笃爱 | 篤愛 | dǔ ài | du3 ai4 | to love deeply; devoted to sb | | |
| 3 | 笃病 | 篤病 | dǔ bìng | du3 bing4 | seriously ill; critical | | |
| 4 | 笃定 | 篤定 | dǔ dìng | du3 ding4 | certain; confident (of some outcome); calm and unhurried | | |
| 5 | 笃厚 | 篤厚 | dǔ hòu | du3 hou4 | honest and generous; magnanimous | | |
| 6 | 笃实 | 篤實 | dǔ shí | du3 shi2 | loyal; sincere; sound | | |
| 7 | 笃实光辉 | 篤實光輝 | dǔ shí guāng huī | du3 shi2 guang1 hui1 | sincere and glorious (idiom) | | |
| 8 | 笃守 | 篤守 | dǔ shǒu | du3 shou3 | to comply faithfully; sincerely abiding by | | |
| 9 | 笃信 | 篤信 | dǔ xìn | du3 xin4 | to believe firmly; devout in one's faith | | |
| 10 | 笃信好学 | 篤信好學 | dǔ xìn hào xué | du3 xin4 hao4 xue2 | sincere belief and diligent study | | |
| 11 | 笃行 | 篤行 | dǔ xíng | du3 xing2 | to carry out (obligation) conscientiously; to behave sincerely | | |
| 12 | 笃学 | 篤學 | dǔ xué | du3 xue2 | studious; diligent in study | | |
| 13 | 笃意真古 | 篤意真古 | dǔ yì zhēn gǔ | du3 yi4 zhen1 gu3 | straightforward and traditional (of writing style) (idiom) | | |
| 14 | 笃志 | 篤志 | dǔ zhì | du3 zhi4 | sincere (in friendship); cordial; steadfast; with single-minded devotion | | |
| 15 | 笃专 | 篤專 | dǔ zhuān | du3 zhuan1 | with undivided attention | | |