| 1 | 怀疑 | 懷疑 | huái yí | huai2 yi2 | to doubt (sth); to be skeptical of; to have one's doubts; to harbor suspicions; to suspect that | | |
| 2 | 无疑 | 無疑 | wú yí | wu2 yi2 | no doubt; undoubtedly | | |
| 3 | 疑问 | 疑問 | yí wèn | yi2 wen4 | question; interrogation; doubt | | |
| 4 | 疑 | 疑 | yí | yi2 | to doubt; to suspect | | |
| 5 | 疑惑 | 疑惑 | yí huò | yi2 huo4 | to doubt; to distrust; unconvincing; to puzzle over; misgivings; suspicions | | |
| 6 | 毫无疑问 | 毫無疑問 | háo wú yí wèn | hao2 wu2 yi2 wen4 | certainty; without a doubt | | |
| 7 | 迟疑 | 遲疑 | chí yí | chi2 yi2 | to hesitate | | |
| 8 | 可疑 | 可疑 | kě yí | ke3 yi2 | suspicious; dubious | | |
| 9 | 疑虑 | 疑慮 | yí lǜ | yi2 lu:4 | hesitation; misgivings; doubt | | |
| 10 | 疑心 | 疑心 | yí xīn | yi2 xin1 | suspicion; to suspect | | |
| 11 | 毫不迟疑 | 毫不遲疑 | háo bù chí yí | hao2 bu4 chi2 yi2 | without the slightest hesitation | | |
| 12 | 满腹疑团 | 滿腹疑團 | mǎn fù yí tuán | man3 fu4 yi2 tuan2 | to be filled with suspicion (idiom) | | |
| 13 | 惊疑 | 驚疑 | jīng yí | jing1 yi2 | bewildered | | |
| 14 | 祛疑 | 祛疑 | qū yí | qu1 yi2 | to dispel doubts | | |
| 15 | 确实无疑 | 確實無疑 | què shí wú yí | que4 shi2 wu2 yi2 | dead certainty (idiom) | | |
| 16 | 解疑 | 解疑 | jiě yí | jie3 yi2 | to dispel doubts; to remove ambiguities | | |
| 17 | 狐疑不决 | 狐疑不決 | hú yí bù jué | hu2 yi2 bu4 jue2 | to be wavering and indecisive (idiom) | | |
| 18 | 将信将疑 | 將信將疑 | jiāng xìn jiāng yí | jiang1 xin4 jiang1 yi2 | half believing, half doubting; skeptical | | |
| 19 | 质疑问难 | 質疑問難 | zhì yí wèn nàn | zhi4 yi2 wen4 nan4 | to present doubts and difficulties for discussion (idiom) | | |
| 20 | 狐疑 | 狐疑 | hú yí | hu2 yi2 | suspicious; in doubt | | |
| 21 | 毫不怀疑 | 毫不懷疑 | háo bù huái yí | hao2 bu4 huai2 yi2 | without the slightest doubt | | |
| 22 | 多闻阙疑 | 多聞闕疑 | duō wén quē yí | duo1 wen2 que1 yi2 | to be well-informed and judicious (idiom) | | |
| 23 | 猜疑 | 猜疑 | cāi yí | cai1 yi2 | to suspect; to have misgivings; suspicious; misgivings | | |
| 24 | 不无可疑 | 不無可疑 | bù wú kě yí | bu4 wu2 ke3 yi2 | not above suspicion (idiom) | | |
| 25 | 不容置疑 | 不容置疑 | bù róng zhì yí | bu4 rong2 zhi4 yi2 | unquestionable | | |