rueful

adj. 后悔的，遗憾的

rubric, ruby, ruby wedding, RUC, ruche, ruched, ruck, rucksack, ruckus, ructions, rudder, ruddily, ruddiness, ruddy, rude, rudely, rudeness, rudiment, rudimentary, rue, ruefully, ruefulness, ruff, ruffian, ruffle, rug, Rugby, Rugby League, Rugby Union, rugged, ruggedly, ruggedness, rugger, ruin, ruination, ruined, ruinous, rule, ruler, ruling,