Read Edit View history 夙夜 sùyè morning and night Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 夙夜 · sùyè · morning and night 2026/03/04 夙夜 sùyè morning and night from dawn until dark; day and night 他夙夜匪懈，致力于科学研究。 created sense Mar 4, 2026, 02:25 AM