15-letter words starting with R

343 15-letter words starting with R hang together through one prefix: RE- opens 260 of them.

343 wordsTop pick REPRESENTATIVESHighest score RHOMBENPORPHYRY 35

4 of 343 are everyday words (1%). Mostly rare words: great for Scrabble, tough for daily puzzles.

Letter
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

P starts the most 15-letter words (695); Y starts the fewest (2). R ranks #8 of 26. The bar under each letter shows the size of its list.

Length
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Best words to play first 343 · most-used first

REPRESENTATIVES₂₀
RECOMMENDATIONS₂₂
REPRESENTATIONS₁₇
REVOLUTIONARIES₁₈
RETROSPECTIVELY₂₅
RECONSTRUCTIONS₁₉
RATIONALIZATION₂₄
RECONSIDERATION₁₈
REVOLUTIONIZING₂₈
RESOURCEFULNESS₂₀
REAUTHORIZATION₂₇
RECONFIGURATION₂₁
REPRODUCIBILITY₂₅
RATIONALISATION₁₅
REAPPORTIONMENT₂₁
REESTABLISHMENT₂₂
RENORMALIZATION₂₆
RECERTIFICATION₂₂
RECONCILIATIONS₁₉
REORGANIZATIONS₂₅
REVOLUTIONISING₁₉
REGIONALIZATION₂₅
RETROPERITONEAL₁₇
REMANUFACTURING₂₃
RITUALISTICALLY₂₀
REINVESTIGATION₁₉
REGIONALISATION₁₆
REORGANISATIONS₁₆
RECONSOLIDATION₁₈
RHEUMATOLOGISTS₂₁
REDISTRIBUTIONS₁₈
REINCORPORATION₁₉
RETRANSMISSIONS₁₇
REHABILITATIONS₂₀
RECOGNIZABILITY₃₂
RADIOTELEGRAPHY₂₅
ROMANTICIZATION₂₈
REINTRODUCTIONS₁₈
RETROREFLECTIVE₂₃
RADIOPROTECTIVE₂₃
REQUALIFICATION₂₉
REINCORPORATING₂₀
RECONNAISSANCES₁₉
RADIOPROTECTION₂₀
REDETERMINATION₁₈
RECOMMISSIONING₂₂
RECOMBINATIONAL₂₁
RESTRICTIVENESS₂₀

Showing the top 48 of 343 words. See every valid word

All valid words 343

A to Z. Includes rare and Collins-only words. Linked tiles open the word's meaning, score and rhymes.

RADICALISATIONS₁₈
RADICALIZATIONS₂₇
RADICULOPATHIES₂₃
RADIOACTIVATING₂₂
RADIOACTIVATION₂₁
RADIOACTIVITIES₂₁
RADIOAUTOGRAPHS₂₂
RADIOAUTOGRAPHY₂₅
RADIOBIOLOGICAL₂₁
RADIOBIOLOGISTS₁₉
RADIOCHEMICALLY₂₈
RADIOGONIOMETER₁₉
RADIOLOCATIONAL₁₈
RADIOMETRICALLY₂₃
RADIOMICROMETER₂₂
RADIOPHONICALLY₂₆
RADIOPHOSPHORUS₂₆
RADIOPROTECTION₂₀
RADIOPROTECTIVE₂₃
RADIOSCOPICALLY₂₅
RADIOSENSITISED₁₇
RADIOSENSITISES₁₆
RADIOSENSITIZED₂₆
RADIOSENSITIZES₂₅
RADIOSTRONTIUMS₁₈
RADIOTELEGRAPHS₂₂
RADIOTELEGRAPHY₂₅
RADIOTELEMETERS₁₈
RADIOTELEMETRIC₂₀
RADIOTELEPHONES₂₁
RADIOTELEPHONIC₂₃
RADIOTHERAPISTS₂₁
RANCOROUSNESSES₁₇
RANGATIRATANGAS₁₇
RAPACIOUSNESSES₁₉
RAPTUROUSNESSES₁₇
RATIONALISATION₁₅
RATIONALIZATION₂₄
REACCELERATIONS₁₉
REACCLIMATISING₂₂
REACCLIMATIZING₃₁
REACCREDITATION₂₀
REACQUAINTANCES₂₈
REACTIONARYISMS₂₂
READMINISTERING₁₉
READVERTISEMENT₂₁
REAFFORESTATION₂₁
REALISABILITIES₁₇
REALIZABILITIES₂₆
REAPPORTIONMENT₂₁
REAPPRAISEMENTS₂₁
REAPPROPRIATING₂₂
REARTICULATIONS₁₇
REASONABILITIES₁₇
REAUTHORISATION₁₈
REAUTHORIZATION₂₇
RECALCITRANCIES₂₁
RECALCITRATIONS₁₉
RECALLABILITIES₁₉
RECANALISATIONS₁₇
RECANALIZATIONS₂₆
RECAPITULATIONS₁₉
RECEIVABILITIES₂₂
RECEPTIBILITIES₂₁
RECEPTIVENESSES₂₂
RECERTIFICATION₂₂
RECESSIVENESSES₂₀
RECHOREOGRAPHED₂₇
RECHROMATOGRAPH₂₈
RECIPROCALITIES₂₁
RECLUSIVENESSES₂₀
RECODIFICATIONS₂₃
RECOGNISABILITY₂₃
RECOGNIZABILITY₃₂
RECOLLECTEDNESS₂₀
RECOLONISATIONS₁₇
RECOLONIZATIONS₂₆
RECOMBINATIONAL₂₁
RECOMMENCEMENTS₂₅
RECOMMENDATIONS₂₂
RECOMMISSIONING₂₂
RECONCENTRATING₂₀
RECONCENTRATION₁₉
RECONCEPTUALISE₂₁
RECONCEPTUALIZE₃₀
RECONCILABILITY₂₄
RECONCILIATIONS₁₉
RECONDENSATIONS₁₈
RECONDITENESSES₁₈
RECONFIGURATION₂₁
RECONFIRMATIONS₂₂
RECONNAISSANCES₁₉
RECONNOISSANCES₁₉
RECONSECRATIONS₁₉
RECONSIDERATION₁₈
RECONSOLIDATING₁₉
RECONSOLIDATION₁₈
RECONSTITUTABLE₁₉
RECONSTITUTIONS₁₇
RECONSTRUCTIBLE₂₁
RECONSTRUCTIONS₁₉
RECONTAMINATING₂₀
RECONTAMINATION₁₉
RECONTEXTUALISE₂₄
RECONTEXTUALIZE₃₃
RECONVALESCENCE₂₄
RECORDABILITIES₂₀
RECOVERABLENESS₂₂
RECREMENTITIOUS₁₉
RECRIMINALISING₂₀
RECRIMINALIZING₂₉
RECRUDESCENCIES₂₂
RECRYSTALLISING₂₁
RECRYSTALLIZING₃₀
RECTIPETALITIES₁₉
RECURSIVENESSES₂₀
RECYCLABILITIES₂₄
REDEEMABILITIES₂₀
REDETERMINATION₁₈
REDINTEGRATIONS₁₇
REDISTILLATIONS₁₆
REDISTRIBUTIONS₁₈
REDOUBTABLENESS₂₀
REDUCIBLENESSES₂₀
REDUCTIVENESSES₂₁
REDUPLICATIVELY₂₆
REELIGIBILITIES₁₈
REESTABLISHMENT₂₂
REFLECTOMETRIES₂₂
REFLEXIBILITIES₂₇
REFLEXIVENESSES₂₈
REFORMABILITIES₂₂
REFORMATIONISTS₂₀
REFORTIFICATION₂₃
REFRACTOMETRIES₂₂
REFRANGIBLENESS₂₁
REFRIGERATORIES₁₉
REFUNDABILITIES₂₁
REGARDFULNESSES₂₀
REGIONALISATION₁₆
REGIONALIZATION₂₅
REGRETFULNESSES₁₉
REGULARISATIONS₁₆
REGULARIZATIONS₂₅
REHABILITATIONS₂₀
REHOSPITALISING₂₁
REHOSPITALIZING₃₀
REHUMANIZATIONS₂₉
REIMPLANTATIONS₁₉
REINCORPORATING₂₀
REINCORPORATION₁₉
REINDUSTRIALISE₁₆
REINDUSTRIALIZE₂₅
REINSTALLATIONS₁₅
REINTERROGATING₁₇
REINTERROGATION₁₆
REINTRODUCTIONS₁₈
REINVESTIGATING₂₀
REINVESTIGATION₁₉
REINVIGORATIONS₁₉
REJUVENESCENCES₂₉
RELATIVISATIONS₁₈
RELATIVIZATIONS₂₇
RELIGIOUSNESSES₁₆
RELINQUISHMENTS₂₉
REMANUFACTURERS₂₂
REMANUFACTURING₂₃
REMARKABILITIES₂₃
REMATERIALISING₁₈
REMATERIALIZING₂₇
REMEDIABILITIES₂₀
REMEMBERABILITY₂₆
REMISSIBILITIES₁₉
REMOBILISATIONS₁₉
REMOBILIZATIONS₂₈
REMONETISATIONS₁₇
REMONETIZATIONS₂₆
REMONSTRATINGLY₂₁
REMONSTRATIVELY₂₃
REMORALISATIONS₁₇
REMORALIZATIONS₂₆
REMORSELESSNESS₁₇
REMOVABLENESSES₂₂
REMYTHOLOGISING₂₅
REMYTHOLOGIZING₃₄
RENATIONALISING₁₆
RENATIONALIZING₂₅
RENORMALISATION₁₇
RENORMALIZATION₂₆
REORCHESTRATING₂₁
REORCHESTRATION₂₀
REORGANISATIONS₁₆
REORGANIZATIONS₂₅
REPAIRABILITIES₁₉
REPEATABILITIES₁₉
REPETITIOUSNESS₁₇
REPHOTOGRAPHING₂₇
REPLICABILITIES₂₁
REPOLARISATIONS₁₇
REPOLARIZATIONS₂₆
REPOSEFULNESSES₂₀
REPRESENTATIONS₁₇
REPRESENTATIVES₂₀
REPRISTINATIONS₁₇
REPRIVATISATION₂₀
REPRIVATIZATION₂₉
REPROACHFULNESS₂₅
REPRODUCIBILITY₂₅
REPUBLICANISING₂₂
REPUBLICANIZING₃₁
REPUDIATIONISTS₁₈
REPULSIVENESSES₂₀
REQUALIFICATION₂₉
REQUISITENESSES₂₄
REQUISITIONISTS₂₄
REREGISTRATIONS₁₆
RESECTABILITIES₁₉
RESENSITIZATION₂₄
RESENTFULNESSES₁₈
RESERVATIONISTS₁₈
RESINIFICATIONS₂₀
RESISTIBILITIES₁₇
RESISTIVENESSES₁₈
RESOCIALISATION₁₇
RESOCIALIZATION₂₆
RESOLUBLENESSES₁₇
RESOLVABILITIES₂₀
RESOURCEFULNESS₂₀
RESPECTABILISED₂₂
RESPECTABILISES₂₁
RESPECTABILIZED₃₁
RESPECTABILIZES₃₀
RESPECTABLENESS₂₁
RESPIRABILITIES₁₉
RESPIRITUALISED₁₈
RESPIRITUALISES₁₇
RESPIRITUALIZED₂₇
RESPIRITUALIZES₂₆
RESPONSIBLENESS₁₉
RESTABILIZATION₂₆
RESTITUTIONISMS₁₇
RESTITUTIONISTS₁₅
RESTORATIONISMS₁₇
RESTORATIONISTS₁₅
RESTRENGTHENING₂₀
RESTRICTIONISMS₁₉
RESTRICTIONISTS₁₇
RESTRICTIVENESS₂₀
RESURRECTIONARY₂₀
RESURRECTIONISE₁₇
RESURRECTIONISM₁₉
RESURRECTIONIST₁₇
RESURRECTIONIZE₂₆
RESYNCHRONISING₂₄
RESYNCHRONIZING₃₃
RESYSTEMATISING₂₁
RESYSTEMATIZING₃₀
RETALIATIONISTS₁₅
RETENTIVENESSES₁₈
RETHEORIZATIONS₂₇
RETINOBLASTOMAS₁₉
RETRANSMISSIONS₁₇
RETRIBALIZATION₂₆
RETRIEVABLENESS₂₀
RETROACTIVENESS₂₀
RETROACTIVITIES₂₀
RETROCOGNITIONS₁₈
RETROGRADATIONS₁₇
RETROGRESSIONAL₁₆
RETROGRESSIVELY₂₂
RETROMINGENCIES₂₀
RETROPERITONEAL₁₇
RETROREFLECTION₂₀
RETROREFLECTIVE₂₃
RETROREFLECTORS₂₀
RETROSPECTIVELY₂₅
RETROVIROLOGIES₁₉
RETROVIROLOGIST₁₉
RETURNABILITIES₁₇
REVALORISATIONS₁₈
REVALORIZATIONS₂₇
REVEALABILITIES₂₀
REVEALINGNESSES₁₉
REVERBERATORIES₂₀
REVERSIBILITIES₂₀
REVICTIMIZATION₃₁
REVISUALISATION₁₈
REVISUALIZATION₂₇
REVITALISATIONS₁₈
REVITALIZATIONS₂₇
REVIVIFICATIONS₂₆
REVOCABLENESSES₂₂
REVOLUTIONARIES₁₈
REVOLUTIONARILY₂₁
REVOLUTIONISERS₁₈
REVOLUTIONISING₁₉
REVOLUTIONIZERS₂₇
REVOLUTIONIZING₂₈
RHEUMATOLOGICAL₂₃
RHEUMATOLOGISTS₂₁
RHINENCEPHALONS₂₅
RHINOSCLEROMATA₂₂
RHOMBENCEPHALON₂₉
RHOMBENPORPHYRS₃₂
RHOMBENPORPHYRY₃₅
RHOMBPORPHYRIES₃₂
RHYPAROGRAPHERS₂₉
RHYPAROGRAPHIES₂₉
RIBONUCLEOSIDES₂₀
RIBONUCLEOTIDES₂₀
RIGHTABLENESSES₂₁
RIGHTEOUSNESSES₁₉
RIGIDIFICATIONS₂₂
RITUALISTICALLY₂₀
RIVERWORTHINESS₂₄
ROENTGENISATION₁₆
ROENTGENIZATION₂₅
ROENTGENOGRAPHS₂₂
ROENTGENOGRAPHY₂₅
ROENTGENOLOGIES₁₇
ROENTGENOLOGIST₁₇
ROENTGENOSCOPES₂₀
ROENTGENOSCOPIC₂₂
ROLLERCOASTERED₁₈
ROMANTICALITIES₁₉
ROMANTICISATION₁₉
ROMANTICIZATION₂₈
RONTGENISATIONS₁₆
RONTGENIZATIONS₂₅
RONTGENOLOGICAL₁₉
RONTGENOLOGISTS₁₇
RONTGENOSCOPIES₂₀
RONTGENOTHERAPY₂₄
ROSTROCARINATES₁₇
ROUNDABOUTATION₁₈
ROUNDABOUTILITY₂₁
ROUNDHEADEDNESS₂₁
RUDIMENTARINESS₁₈
RUMBLEGUMPTIONS₂₄
RUMBUSTIOUSNESS₁₉
RUMMELGUMPTIONS₂₄
RUMMLEGUMPTIONS₂₄
RUMORMONGERINGS₂₁

Letters by positionIn 76% of these words the 2nd letter is E.

2nd letter

E76%
A11%
O6%

9th letter

I24%
S10%
A10%

12th letter

I29%
T25%
S11%

13th letter

I42%
O18%
S14%

14th letter

N29%
E28%
O12%

15th letter

S58%
N12%
G10%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses

Score spreadMost of these words score 20 in Scrabble; RHOMBENPORPHYRY tops the list with 35. Scores before board bonuses.

1515 points: 5 words
16 points: 13 words
1717 points: 37 words
18 points: 30 words
1919 points: 44 words
20 points: 45 words
2121 points: 33 words
22 points: 29 words
2323 points: 12 words
24 points: 14 words
2525 points: 18 words
26 points: 18 words
2727 points: 13 words
28 points: 7 words
2929 points: 9 words
30 points: 5 words
3131 points: 4 words
32 points: 3 words
3333 points: 2 words
34 points: 1 words
3535 points: 1 words

Word	Scrabble	Words With Friends	Dictionaries
RHOMBENPORPHYRY	35	36	Collins only
REMYTHOLOGIZING	34	37	All three
RECONTEXTUALIZE	33	37	All three
RESYNCHRONIZING	33	36	Collins only
RECOGNIZABILITY	32	36	All three
RHOMBENPORPHYRS	32	34	Collins only
RHOMBPORPHYRIES	32	33	Collins only
REVICTIMIZATION	31	35	NWL only
REACCLIMATIZING	31	37	All three
REPUBLICANIZING	31	39	All three
RESPECTABILIZED	31	35	Collins only
RECONCEPTUALIZE	30	36	All three

Re- is the busiest prefix in English, and at fifteen letters it is overwhelming. Only 83 of the 343 words start with anything else, and RECON- alone accounts for 25. The average score is 21.5, and four plural nouns are the only common entries.

The R words run on RE-

RE- opens 260 of the 343 words; the other 83 start differently.
RECON- covers 25 of them, from reconstructions to reconsideration.
200 end in S, close to three in five.
Only 4 count as common, and all 4 are plural nouns.
Collins 326 against NWL2023 215 leaves 127 Collins-only entries.
The 83 words that avoid RE- cluster in RA- at 38 and RO- at 22.

The everyday R words hide in plain plurals

recommendations, representations, representatives and revolutionaries are the only four common entries, and every one is a plural noun. They share an -ion or -ary spine that long formal nouns tend to follow.

41 entries finish on -tion, which makes the pattern easy to spot and easy to confuse. rationalization and reconfiguration read like representations until you reach the end of the word.

For a list this long, that is a narrow target. Reading the first two letters rules out about three quarters of the possibilities in a single glance.

Scoring 15-letter words starting with R

rhombenporphyry tops the group at 35, and 5 Rhomb- words sit on the list. remythologizing and recontextualize follow at 34 and 33, both lifted by a Z or an X.

52 entries hold an -iz- or -yz- spelling, so the -ize habit inflates the scores rather than the R itself. The average of 21.5 is modest, and 253 of the 343 words carry a definition.

The word list that keeps most of them

Note

Collins carries 326 of the 343 entries and NWL2023 only 215, leaving 127 words out of North American play. The four common plurals clear all three lists, but the 35-point leader, rhombenporphyry, is Collins-only.

Questions people ask

How many 15-letter words start with R?

343. Collins lists 326 of them, NWL2023 accepts 215 and ENABLE 185, so the group loses roughly a third of its words when you switch to the North American list.

How many R-starting 15-letter words begin with RE-?

260 of the 343, about three in four. RECON- accounts for 25 of those, including reconstructions and reconsideration, and only 83 words start with any other pair of letters.

What is the highest-scoring 15-letter word starting with R?

rhombenporphyry scores 35 points, the best on the list. remythologizing follows at 34 and recontextualize and resynchronizing tie at 33, so every leader carries a Z, an X or a Y.

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