| 偏听偏信 | piān tīng piān xìn | selective listening; to hear what one wants to hear |
| 光信号 | guāng xìn hào | optical signal |
| 公众电信网路 | gōng zhòng diàn xìn wǎng lù | public telephone network |
| 凶信 | xiōng xìn | fateful news; news of sb's death |
| 出错信息 | chū cuò xìn xī | error message (computing) |
| 切分信息 | qiè fēn xìn xī | segmental information |
| 前信号灯 | qián xìn hào dēng | car front indicator |
| 化学信息素 | huà xué xìn xī sù | semiochemical |
| 半信半疑 | bàn xìn bàn yí | half-believe, half-doubt |
| 可信 | kě xìn | trustworthy |
| 可信任 | kě xìn rèn | trusty |
| 可信度 | kě xìn dù | degree of credibility; reliability |
| 唁信 | yàn xìn | a letter of condolence |
| 单位信托 | dān wèi xìn tuō | unit trust (finance) |
| 回信地址 | huí xìn dì zhǐ | return address |
| 回邮信封 | huí yóu xìn fēng | self-addressed stamped envelope (SASE) |
| 固网电信 | gù wǎng diàn xìn | landline (fixed-line) telecommunications |
| 国际电信联盟 | guó jì diàn xìn lián méng | International Telecommunications Union; ITU |
| 坚信礼 | jiān xìn lǐ | confirmation (Christian ceremony) |
| 威信扫地 | wēi xìn sǎo dì | to lose every scrap of reputation |
| 威信县 | Wēi xìn xiàn | Weixin county in Zhaotong 昭通, Yunnan |
| 孝悌忠信 | xiào tì zhōng xìn | Confucian moral injunctions of fidelity; piety to one's parents, respect to one's older brother, loyalty to one's monarch, faith to one's male friends |
| 守信 | shǒu xìn | to keep promises |
| 守信用 | shǒu xìn yòng | to keep one's word; trustworthy |
| 定时信管 | dìng shí xìn guǎn | a timed detonator |
家丑不可外传，
流言切莫轻信 | jiā chǒu bù kě wài chuán ,
liú yán qiē mò qīng xìn | Don't spread abroad the shame of the family, don't believe rumors lightly (common expression); Don't wash your dirty linen in public, don't listen to others' gossip. |
| 写信 | xiě xìn | to write a letter |
| 崇信 | Chóng xìn | Chongxin county in Pingliang 平凉, Gansu |
| 崇信县 | Chóng xìn xiàn | Chongxin county in Pingliang 平凉, Gansu |
| 工信部 | Gōng xìn bù | Ministry of Industry and Information Technology (abbr) |
| 平信 | píng xìn | ordinary mail (as opposed to air mail etc) |
| 庾信 | Yǔ Xìn | Yu Xin (513-581), poet from Liang of the Southern dynasties 南朝梁朝 and author of Lament for the South 哀江南赋 |
| 引信 | yǐn xìn | a detonator |
| 引信系统 | yǐn xìn xì tǒng | fuzing system |
| 彩信 | cǎi xìn | multi-media messaging service (MMS) (telecommunications) |
| 后信号灯 | hòu xìn hào dēng | car rear indicator |
| 快信 | kuài xìn | letter by express mail |
| 爱立信 | Ài lì xìn | Ericsson (Swedish telecommunications company) |
| 凭信 | píng xìn | to trust |
| 捎信 | shāo xìn | to take a letter; to send word |
| 授信 | shòu xìn | to extend credit (finance) |
| 挂号信 | guà hào xìn | registered letter |
| 推荐信 | tuī jiàn xìn | recommendation letter |
| 拣信室 | jiǎn xìn shì | mail sorting office |
| 据信 | jù xìn | according to reports; is reported as... |
| 收发短信 | shōu fā duǎn xìn | to text; to receive and send SMS messages |
| 改信 | gǎi xìn | to convert (to another religion) |
| 改变信仰者 | gǎi biàn xìn yǎng zhě | a convert |
| 数位信号 | shù wèi xìn hào | digital signal |
| 数字信号 | shù zì xìn hào | digital signal |
