20 Letter Words Starting With R

Every 20-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-eye blueberry32rachel louise carson25rachycentron canadum34racial extermination30radar countermeasure24radial triangulation21radially symmetrical32radical hysterectomy35radiigera fuscogleba29radio interferometer25radioactive material27radioactive particle29rafael del pino diaz33ralph johnson bunche40ramsay hunt syndrome32random access memory32random-access memory32ranunculus aquatilis30raptus hemorrhagicus32rate of depreciation26ratibida columnifera29rattlesnake plantain25rattlesnake's master24rauwolfia serpentina27ray douglas bradbury31reach one's nostrils22real-estate business20real-time processing25rechargeable-battery32reciprocal insurance27reciprocating engine27reclamation district26reconnaissance plane25recording anemometer27recording hygrometer32recording instrument25recreational vehicle29rectifier instrument26recuperative furnace31recursive definition28red silk-cotton tree24red-backed sandpiper33red-bellied terrapin24red-green dichromacy33red-legged partridge26red-veined pie plant26red-winged blackbird35redheaded woodpecker37redirect examination31reductio ad absurdum27reflecting telescope29refracting telescope29refrigeration system28regenerative cooling26regenerative furnace28regional anaesthesia23registered trademark28regression of y on x30regular convex solid32regular dodecahedron28regulatory authority29reinforcing stimulus27rejoicing in the law33rejoicing of the law36relational adjective32relative atomic mass27reluctance amplifier30remain incommunicado30rene-robert cavelier25representative-elect26reproductive cloning30republic of botswana32republic of bulgaria30republic of cameroon31republic of colombia33republic of djibouti37republic of honduras31republic of kiribati33republic of maldives33republic of paraguay33republic of slovenia30republic of suriname29republic of zimbabwe45residential district23resistance pyrometer28respiratory acidosis27respiratory disorder26respiratory quotient33restaurant attendant20restriction fragment27restriction nuclease23restrictive practice30retaliatory eviction27retirement community30retiring disposition23retrobulbar neuritis23retromandibular vein27return on investment23reversionary annuity28rhagoletis pomonella27rhamnus californicus31rhamnus carolinianus26rheims-douay version30rheumatoid arthritis28rhineland-palatinate25rhinoceros unicornis26richard d'oyly carte32richard henry tawney36richard john roberts36right gastric artery28right to an attorney24right to due process26right-handed pitcher34ring-around-the-rosy25ring-necked parakeet32ring-necked pheasant31ritual contamination23robert bruce mathias29robert james fischer37robert mearns yerkes29robert r. livingston23robert van de graaff30robinia pseudoacacia28rocky mountain pinon31rocky mountain sheep34rocky-mountain maple33roentgenographically32roller-blind shutter24ronald wilson reagan23rotary international22rotational nystagmus25rough-legged buzzard46round-tailed muskrat26rubus phoenicolasius28ruby-crowned kinglet34rudolf karl bultmann30rugged individualism29
20 LETTER WORDS BY FIRST LETTER26
R WORDS BY LENGTH14
See the bigger listsAll 20 letter words, or every word starting with R.
20 letter words Words starting with R
You Go Words!
© 2026 You Go Words! · Independently made since 2014.For educational entertainment only. Scrabble®, Words With Friends® and other game marks belong to their owners.