15-Letter Words Start with 'r'

There are 183 15-letter words that start with 'r'.

ritualistically	roentgenography
roentgenologies	roentgenologist
romanticization	roundheadedness
rudimentariness	rumbustiousness
rumormongerings	radicalizations
radioactivities	radioautographs
radioautography	radiobiological
radiobiologists	radiochemically
radiometrically	radioprotection
radioprotective	radiostrontiums
radiotelegraphs	radiotelegraphy
radiotelemetric	radiotelephones
radiotherapists	rapaciousnesses
rapturousnesses	rationalization
reacclimatizing	reaccreditation
reactionaryisms	reafforestation
reapportionment	reappropriating
reasonabilities	reauthorization
recalcitrancies	recallabilities
recanalizations	recapitulations
receptivenesses	recertification
recessivenesses	rechoreographed
rechromatograph	reclusivenesses
recodifications	recognizability
recolonizations	recombinational
recommencements	recommendations
recommissioning	reconcentrating
reconcentration	reconceptualize
reconcilability	reconciliations
reconditenesses	reconfiguration
reconfirmations	reconnaissances
reconsecrations	reconsideration
reconsolidating	reconstitutions
reconstructible	reconstructions
recontaminating	recontamination
recontextualize	recrystallizing
recursivenesses	redetermination
redintegrations	redistillations
redistributions	reductivenesses
reduplicatively	reeligibilities
reestablishment	reflectometries
reflexivenesses	reformabilities
refortification	refractometries
refrangibleness	refundabilities
regardfulnesses	regionalization
regretfulnesses	regularizations
rehabilitations	rehospitalizing
reimplantations	reincorporating
reincorporation	reindustrialize
reinstallations	reintroductions
reinvestigating	reinvestigation
reinvigorations	rejuvenescences
religiousnesses	relinquishments
remanufacturers	remanufacturing
rematerializing	remediabilities
rememberability	remobilizations
remonetizations	remonstratively
remorselessness	removablenesses
remythologizing	renationalizing
reorchestrating	reorchestration
reorganizations	repairabilities
repeatabilities	repetitiousness
rephotographing	replicabilities
repolarizations	reposefulnesses
representations	representatives
repristinations	reprivatization
reproachfulness	reproducibility
republicanizing	repudiationists
repulsivenesses	requisitenesses
reregistrations	resectabilities
resentfulnesses	reservationists
resistibilities	resistivenesses
resocialization	resourcefulness
respectableness	respiritualized
respiritualizes	responsibleness
restrengthening	restrictionisms
restrictionists	restrictiveness
resurrectionist	resystematizing
retentivenesses	retinoblastomas
retransmissions	retroactivities
retrogradations	retrogressively
retroperitoneal	retroreflection
retroreflective	retroreflectors
retrospectively	revalorizations
reversibilities	revisualization
revitalizations	revivifications
revolutionaries	revolutionarily
revolutionising	revolutionizers
revolutionizing	rheumatologists
rhombencephalon	ribonucleosides
ribonucleotides	righteousnesses
rigidifications

Note: These 183 15-letter words that start with 'r' are found from the USA & Canada version of the tournament Scrabble word list.