rudiment, n. [element]; [embryo]; pl. elements, accidence.

rudimentary, n. rudimental, [elementary], initial; embryonic, [embryo].

rue, v. [regret], [deplore].

rueful, a. woeful, [sad], [lugubrious], [mournful].

ruffian, n. [monster], [villain], [rowdy], desperado.

ruffle, n. ruff, [frill], [flounce], [furbelow]; [perturbation], [flurry], [bustle].

ruffle, v. [pucker], [pleat], [wrinkle]; [rumple], derange, disarrange, [disorder]; [agitate], discompose, [perturb], disconcert; swagger, strut.

rugged, a. [irregular], [rough], [uneven], [scraggy], [cragged], craggy; inclement, [tempestuous], turbulent, [boisterous], [wild]; (Colloq.) [robust], [hardy], [vigorous]; austere, [crabbed], [harsh], [unfeeling].

ruin, n. bane, [pest], [plague].

ruin, n. [wreck], [destruction], [undoing], dilapidation, [disorganization], [perdition], [ruination], subversion, [shipwreck], [downfall], [havoc], demolition.