rue

n. 后悔，遗憾.

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