18 Letter Words Starting With R
Every 18-letter word that starts with the letter R, in alphabetical order. Tap any word for its definitions, syllables and game scores.
ALL WORDS A TO Z
rabbit's-foot fern25rabbit-proof fence30racial segregation21racial unconscious23radiant efficiency31radiation pressure20radiation sickness24radiation syndrome24radical empiricism28radical mastectomy29radio transmission20radioactive dating25radioactive series23radioactivity unit26radiocarbon dating24radiocommunication27radiosonde balloon21ragtag and bobtail23railway locomotive30rain cats and dogs20rainer maria rilke22ralph barton perry28ramesses the great22rampion bellflower29range of mountains22ranunculus ficaria24rapid eye movement29rappahannock river33rare-earth element21rate determination20rattlesnake master23rattlesnake orchid27raymond b. cattell25reaction formation24reading assignment22real estate broker22reasoning backward30rebound tenderness21receive absolution24reciprocal pronoun25reconstructionaryn25reconstructiveness25recurrence formula26red hand defenders26red-backed lemming31red-bellied turtle20red-breasted snipe22red-light district24red-spotted purple24redevelopment area25redstem storksbill26reduced hemoglobin29reduction division24reentering polygon24reference quantity34refik shefket ince35reflection density26refractory anaemia27refrigeration ship26refrigerator truck27reggio di calabria23reggio nell'emilia20regional enteritis18registered breadth25regression therapy26regressive sorites21regular hexahedron32regular octahedron24regular polyhedron27regular recurrence22regulatory offence29regulatory offense27reijo ruotsolainen24relative frequency37relative incidence25relative magnitude24religious ceremony25religious doctrine21religious festival24religious movement25religious offering25rembrandt van rijn31remembrance sunday29remote possibility26render recognition21renewable resource24repeat performance28representative art22representativeness23reproduction proof27reproductive organ26republic of angola26republic of cyprus32republic of guinea26republic of latvia28republic of malawi30republic of panama29republic of poland28republic of turkey32republic of uganda27republic of zambia38research monograph30research professor27resident physician28residual magnetism23resistance fighter26resistance furnace24resistance welding24resistive coupling25resonance spectrum25resonating chamber27respiratory center24respiratory system27resplendent trogon21responsible person23restraint of trade20restriction enzyme33restrictive clause24resurrection plant21retail price index28retardation method24reticulated python28retinal detachment25retirement account23retirement benefit24retirement complex32retirement pension21retirement program24retrograde amnesia21return-flue boiler21reverberation time24reverberatory kiln29reversible process26revolution control22revolutionary wars26revolving bookcase32rh incompatibility31rhamnus purshianus27rheims-douay bible29rheumatic aortitis24rhinolaryngologist26rhinoptera bonasus24rhizoctinia solani31rhizopus nigricans34rhodes scholarship31rhodymenia palmata30ribbon development29richard d. fosbury30richard e. smalley26richard j. roberts30richard trevithick35richea dracophylla33right gastric vein26righteyed flounder29rightful authority30ring-around-a-rosy20rntgenographically30robbery conviction31robert a. heinlein20robert edwin peary27robert king merton25robert oppenheimer28robert penn warren23robert treat paine20robotics equipment34roccella tinctoria23rocky mountain jay37rodolia cardinalis21roentgenologically25roger brooke taney26roman architecture26root determinative23roquefort dressing31rose louise hovick28rosebay willowherb33roseola infantilis20rosid dicot family28rotating mechanism27rotation-inversion20rotational latency22rotten-heartedness21rough bristlegrass24rough-leaved aster24rough-skinned newt28roughtail stingray25round-bottom flask28royal velvet plant27roystonea oleracea22rubber hydrocarbon32rubus loganobaccus26rubus occidentalis24rudbeckia serotina26ruddy-complexioned36rule of morphology30rumex obtusifolius31running blackberry31running commentary27running engagement22running martingale21rupicola peruviana26russian federation21russian mayonnaise22russian revolution20russian tumbleweed25russo-japanese war28ruvettus pretiosus22
18 LETTER WORDS BY FIRST LETTER26
R WORDS BY LENGTH14
See the bigger listsAll 18 letter words, or every word starting with R.
18 letter words
Words starting with R