| sù | Gansu/respectful |
| 肃 | surname Su |
| 肃北县 | Subei Mongol autonomous county in Jiuquan 酒泉, Gansu |
| 肃北蒙古族自治县 | Subei Mongol autonomous county in Jiuquan 酒泉, Gansu |
| 肃南裕固族自治县 | Su'nan Yuguzu autonomous county in Gansu |
| 肃反 | purge of counter-revolutionary elements (esp. Stalin's purges of the 1930 and Mao's purges 1955-57) abbr. for 肅清反革命份子|肃清反革命分子 |
| 肃反运动 | purge of counter-revolutionary elements (esp. Stalin's purges of the 1930 and Mao's purges 1955-57) abbr. for 肅反肅清反革命份子|肃清反革命分子运动 |
| 肃宁 | Suning county in Cangzhou 滄州|沧州 |
| 肃宁县 | Suning county in Cangzhou 滄州|沧州 |
| 肃州 | Suzhou district of Jiuquan City 酒泉市, Gansu |
| 肃州区 | Suzhou district of Jiuquan City 酒泉市, Gansu |
| 肃慎 | ancient ethnic group of northeast frontier of China |
| 肃敬 | respectful deferential |
| 肃杀 | austere stern harsh |
| 肃毒 | eliminating drug addiction, drug trafficking and other related illegal activities |
| 肃清 | purge |
| 肃清反革命分子 | purge of counter-revolutionaries (esp. Stalin's purges of the 1930 and Mao's purges 1955-57) abbr. 肅反|肃反 |
| 肃然 | respectfully |
| 肃然生畏 | to be struck with awe |
| 肃然起敬 | to feel deep veneration for sb (idiom) |
| 肃穆 | solemn and respectful serene |