| sù | morning/early/long-held/long-cherished |
| 夙 | morning early long-held |
| 夙世 | previous incarnation |
| 夙仇 | long-time enemy; long-standing enmity |
| 夙兴夜寐 | to rise early and sleep late (idiom); to work hard to study diligently to burn the candle at both ends |
| 夙夜 | morning and night always at all times |
| 夙夜匪懈 | to work from morning to night (idiom) |
| 夙嫌 | old grudge long-standing resentment |
| 夙志 | long-cherished ambition |
| 夙怨 | old grudge |
| 夙愿 | long-cherished wish |
| 夙愿以偿 | a long-cherished ambition is realized |
| 夙敌 | old foe long-standing enemy |
| 夙日 | at ordinary times |
| 夙来 | It is usually written as "素来" nowadays. |
| 夙缘 | predestination from the past; fate inherited from previous incarnation |
| 夙诺 | old promise long-standing commitment |