| 信 | xìn | letter; mail; to trust; to believe; to profess faith in; truthful; confidence; trust; at will; at random |
| 信号 | xìn hào | signal |
| 相信 | xiāng xìn | to be convinced (that sth is true); to believe; to accept sth as true |
| 通信 | tōng xìn | to communicate |
| 信心 | xìn xīn | confidence; faith (in sb or sth); CL:个 |
| 信任 | xìn rèn | to trust; to have confidence in |
| 信息 | xìn xī | information; news; message |
| 迷信 | mí xìn | superstition |
| 来信 | lái xìn | incoming letter; send a letter here |
| 信用 | xìn yòng | to trust; credit (commerce); trustworthiness; creditworthiness |
| 信贷 | xìn dài | credit; borrowed money |
| 威信 | wēi xìn | prestige; reputation; trust; credit with the people; Weixin county in Zhaotong 昭通, Yunnan |
| 信念 | xìn niàn | faith; belief; conviction |
| 深信 | shēn xìn | to believe firmly |
| 电信号 | diàn xìn hào | electrical signal |
| 信件 | xìn jiàn | a letter (i.e. sent in the mail) |
| 自信 | zì xìn | to have confidence in oneself; self-confidence |
| 坚信 | jiān xìn | to believe firmly; without any doubt |
| 亲信 | qīn xìn | trusted aide |
| 确信 | què xìn | to be convinced; to be sure; to firmly believe; to be positive that; definite news |
| 信赖 | xìn lài | to trust; to have confidence in; to have faith in; to rely on |
| 回信 | huí xìn | to reply; to write back; letter written in reply; CL:封 |
| 信徒 | xìn tú | believer |
| 信服 | xìn fú | to believe; to be convinced; to convince sb |
| 电信 | diàn xìn | telecommunications |
| 书信 | shū xìn | letter; epistle |
| 破除迷信 | pò chú mí xìn | to eliminate superstition (idiom) |
| 轻信 | qīng xìn | to easily trust; gullible; naïve |
| 信奉 | xìn fèng | belief; to believe (in sth) |
| 信封 | xìn fēng | envelope; CL:个 |
| 送信 | sòng xìn | to send word; to deliver a letter |
| 背信弃义 | bèi xìn qì yì | breaking faith and abandoning right (idiom); to betray; treachery; perfidy |
| 信誉 | xìn yù | prestige; distinction; reputation; trust |
| 信条 | xìn tiáo | creed; article of faith |
| 信阳 | Xìn yáng | Xinyang prefecture level city in Henan |
| 置信 | zhì xìn | to be confident in; confidence; to believe |
| 音信 | yīn xìn | message |
| 发信 | fā xìn | post a letter |
| 听信 | tīng xìn | to listen to information; to get the news; to believe what one hears |
| 通信卫星 | tōng xìn wèi xīng | communications satellite |
| 信义 | xìn yì | good faith; honor; trust and justice; Xinyi or Hsinyi district of Taipei City 台北市, Taiwan; Xinyi or Hsini district of Keelung City 基隆市, Taiwan; Xinyi or Hsini township in Nantou county 南投县, central Taiwan |
| 信号灯 | xìn hào dēng | signal light; car indicator |
| 公开信 | gōng kāi xìn | open letter |
| 复信 | fù xìn | to reply to a letter |
| 信托 | xìn tuō | to entrust; trust bond (finance) |
| 信息论 | xìn xī lùn | information theory |
| 信纸 | xìn zhǐ | letter paper; writing paper |
| 失信 | shī xìn | to break a promise |
| 忠信 | zhōng xìn | faithful and honest; loyal and sincere |
| 数字通信 | shù zì tōng xìn | digital communications |
