ruin

vt./vi.毁灭；(使)破产 n.毁灭；(pl.)废墟

rude, rudely, rudeness, rudiment, rudimentary, rue, rueful, ruefully, ruefulness, ruff, ruffian, ruffle, rug, Rugby, Rugby League, Rugby Union, rugged, ruggedly, ruggedness, rugger, ruination, ruined, ruinous, rule, ruler, ruling, rum, rumba, rumble, rumbling, rumbustious, ruminant, ruminate, rumination, ruminative, ruminatively, rummage, rummage sale, rummy, rumor,