| 严肃HSK 5 | yán sù | solemn; grave; serious; earnest; severe | |
| 甘肃 | gān sù | Gansu province, abbr. 甘 | |
| 肃穆 | sù mù | solemn and respectful; serene | |
| 肃清 | sù qīng | to purge | |
| 肃然起敬 | sù rán qǐ jìng | to feel deep veneration for sb (idiom) |
| 1 | We need to have a serious conversation. | |
| 2 | His determination for success is admirable. | |
| 3 | Her serious expression makes people feel scared. | |
| 4 | Elections should be treated seriously and carefully. | |
| 5 | Those who violate discipline must be subject to serious punishment. |