13-letter words ending in R

13-letter words ending in R number 257, including familiar compounds and technical terms; PHILOSOPHIZER tops the scoring examples at 32 points.

257 wordsTop pick ADMINISTRATORHighest score PHILOSOPHIZER 32

7 of 257 are everyday words (3%). 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

S ends the most 13-letter words (7,018); K ends the fewest (7). R ranks #10 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 257 · most-used first

ADMINISTRATOR₁₆
GRANDDAUGHTER₂₀
SEMICONDUCTOR₂₀
PERPENDICULAR₂₀
WHISTLEBLOWER₂₄
ROLLERCOASTER₁₅
CHOREOGRAPHER₂₄
EXTRACELLULAR₂₂
QUARTERMASTER₂₄
INTRACELLULAR₁₅
SCHOOLTEACHER₂₃
SUPERCOMPUTER₂₁
SUBCONTRACTOR₁₉
NEUROMUSCULAR₁₇
THERMONUCLEAR₂₀
DEFIBRILLATOR₁₉
ACCELEROMETER₁₉
MULTICELLULAR₁₇
KNICKERBOCKER₃₁
INTELLIGENCER₁₆
INTRAMUSCULAR₁₇
MICROCOMPUTER₂₃
OCEANOGRAPHER₂₁
CAMPYLOBACTER₂₆
GROUNDSKEEPER₂₁
PHOTORECEPTOR₂₂
INTRAVASCULAR₁₈
AUTHENTICATOR₁₈
INTERCELLULAR₁₅
MICROVASCULAR₂₂
POTENTIOMETER₁₇
UNSPECTACULAR₁₉
CONCERTMASTER₁₉
UNDERACHIEVER₂₂
NEUROVASCULAR₁₈
KINDERGARTNER₁₉
LEXICOGRAPHER₂₈
STATIONMASTER₁₅
BIBLIOGRAPHER₂₃
CRYPTOGRAPHER₂₆
COUNTERFEITER₁₈
SUBMILLIMETER₁₉
PHOTODETECTOR₂₁
DISCRIMINATOR₁₈
CIRCUMSTELLAR₁₉
KAPELLMEISTER₂₁
SUPERCOLLIDER₁₈
SUBMANDIBULAR₂₀

Showing the top 48 of 257 words. See every valid word

All valid words 257

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

ACCELEROMETER₁₉
ADMINISTRATOR₁₆
AEROGENERATOR₁₄
AFFENPINSCHER₂₆
ALCOHOLOMETER₂₀
ANTIFOREIGNER₁₇
ATTITUDINISER₁₄
ATTITUDINIZER₂₃
AUTHENTICATOR₁₈
BACKSCRATCHER₂₈
BARBERSHOPPER₂₄
BIBLIOGRAPHER₂₃
BIOGEOGRAPHER₂₂
BIOPROSPECTOR₂₁
BLANKETFLOWER₂₅
BRAILLEWRITER₁₈
BREASTSTROKER₁₉
CAMPYLOBACTER₂₆
CANDLELIGHTER₂₀
CANDLESNUFFER₂₂
CAPELLMEISTER₁₉
CARDIOGRAPHER₂₂
CHALCOGRAPHER₂₆
CHARACTERISER₂₀
CHARACTERIZER₂₉
CHARTOGRAPHER₂₄
CHEMORECEPTOR₂₄
CHOREOGRAPHER₂₄
CHRISTIANISER₁₈
CHRISTIANIZER₂₇
CHRONOGRAPHER₂₄
CIRCUMSCRIBER₂₃
CIRCUMSTELLAR₁₉
CLAPPERCLAWER₂₄
CLISHMACLAVER₂₅
COCONSPIRATOR₁₉
CONCERTMASTER₁₉
CONGLOMERATOR₁₈
CONGLUTINATOR₁₆
CONGRATULATOR₁₆
CONVENTIONEER₁₈
COSTARDMONGER₁₉
COTRANSPORTER₁₇
COUNTERBIDDER₁₉
COUNTERFEITER₁₈
COUNTERPLAYER₂₀
COUNTERSNIPER₁₇
COUNTERTERROR₁₅
COUNTERWORKER₂₂
CRYPTOGRAPHER₂₆
CYBERATTACKER₂₆
CYBERSQUATTER₂₉
DECELEROMETER₁₈
DECONSTRUCTOR₁₈
DEFIBRILLATOR₁₉
DEMINERALISER₁₆
DEMINERALIZER₂₅
DEMULTIPLEXER₂₅
DEPRESSOMOTOR₁₈
DESULPHURISER₁₉
DESULPHURIZER₂₈
DIAPHANOMETER₂₁
DISCRIMINATOR₁₈
DISINTEGRATOR₁₅
DISTINGUISHER₁₈
DOUBLESPEAKER₂₂
ECCLESIOLATER₁₇
EDITORIALISER₁₄
EDITORIALIZER₂₃
ELECTIONEERER₁₅
ELECTROPLATER₁₇
EQUIMOLECULAR₂₆
EXTRACELLULAR₂₂
EXTRAVASCULAR₂₅
FASHIONMONGER₂₂
FIBROVASCULAR₂₃
FICTIONALIZER₂₇
FINGERPAINTER₁₉
FORTUNETELLER₁₆
FURSHLUGGINER₂₁
GERRYMANDERER₂₀
GLOSSOGRAPHER₂₀
GLYPHOGRAPHER₂₈
GLYPTOGRAPHER₂₅
GRANDDAUGHTER₂₀
GROUNDBREAKER₂₁
GROUNDSKEEPER₂₁
HAEMODIALYSER₂₂
HAEMODIALYZER₃₁
HARBOURMASTER₂₀
HEMACYTOMETER₂₅
HEMOCYTOMETER₂₅
HYPERINTENSER₂₁
HYPERPRODUCER₂₆
INDOCTRINATOR₁₆
INTELLIGENCER₁₆
INTERBEHAVIOR₂₁
INTERCELLULAR₁₅
INTERCOLUMNAR₁₇
INTERGRANULAR₁₄
INTERMEDIATOR₁₆
INTEROBSERVER₁₈
INTERPELLATOR₁₅
INTERPETIOLAR₁₅
INTERPILASTER₁₅
INTERSCAPULAR₁₇
INTRACAPSULAR₁₇
INTRACELLULAR₁₅
INTRAMUSCULAR₁₇
INTRAPETIOLAR₁₅
INTRAVASCULAR₁₈
KAPELLMEISTER₂₁
KETTLEDRUMMER₂₂
KINDERGARTNER₁₉
KNICKERBOCKER₃₁
KNUCKLEBALLER₂₅
KNUCKLEDUSTER₂₄
LEXICOGRAPHER₂₈
LITHONTRIPTOR₁₈
MALADMINISTER₁₈
MICROCOMPUTER₂₃
MICRODETECTOR₂₀
MICROVASCULAR₂₂
MIDDLEBREAKER₂₃
MISADVENTURER₁₉
MISCALCULATOR₁₉
MONOCHROMATOR₂₂
MONOMOLECULAR₁₉
MORPHOGRAPHER₂₆
MOUTHBREATHER₂₃
MULTICELLULAR₁₇
MULTIEMPLOYER₂₂
MULTIPLICATOR₁₉
MULTIVIBRATOR₂₀
MUSSELCRACKER₂₃
NEANDERTHALER₁₇
NEUROCOMPUTER₁₉
NEUROFIBRILAR₁₈
NEUROMUSCULAR₁₇
NEUROVASCULAR₁₈
NONCHURCHGOER₂₄
NONCOMPETITOR₁₉
NONCOOPERATOR₁₇
NONPROGRAMMER₂₀
NONSUBSCRIBER₁₉
OCEANOGRAPHER₂₁
OYSTERCATCHER₂₃
PADDLEWHEELER₂₃
PALAEOGRAPHER₂₁
PANRADIOMETER₁₈
PASSIONFLOWER₂₁
PERPENDICULAR₂₀
PHILOSOPHISER₂₃
PHILOSOPHIZER₃₂
PHOTOCOMPOSER₂₄
PHOTODETECTOR₂₁
PHOTOENGRAVER₂₂
PHOTOFINISHER₂₄
PHOTORECEPTOR₂₂
PHYSIOGRAPHER₂₇
PHYTOPLANKTER₂₇
PNEUMATOMETER₁₉
POSTCONCILIAR₁₉
POTENTIOMETER₁₇
PREDESTINATOR₁₆
PREDETERMINER₁₈
PREFABRICATOR₂₂
PREMANDIBULAR₂₀
PROPAGANDISER₁₉
PROPAGANDIZER₂₈
PROPRIOCEPTOR₂₁
PSYCHOBABBLER₂₉
PYRHELIOMETER₂₃
QUADRILOCULAR₂₅
QUARTERDECKER₂₉
QUARTERMASTER₂₄
REALPOLITIKER₁₉
RECONNOITERER₁₅
RECONSTRUCTOR₁₇
REFLECTOMETER₂₀
REFRACTOMETER₂₀
REHABILITATOR₁₈
REINVIGORATOR₁₇
RESTAURANTEUR₁₃
RHEUMATICKIER₂₄
ROLLERCOASTER₁₅
SACCHARIMETER₂₂
SACCHAROMETER₂₂
SCANDALMONGER₁₉
SCHOOLTEACHER₂₃
SCINTISCANNER₁₇
SEISMOGRAPHER₂₁
SELENOGRAPHER₁₉
SEMICONDUCTOR₂₀
SEMIPERIMETER₁₉
SHLOCKMEISTER₂₄
SIMPLIFICATOR₂₂
SOMNAMBULATOR₁₉
SOPHISTICATOR₂₀
SPIRITUALISER₁₅
SPIRITUALIZER₂₄
STAGEWORTHIER₂₀
STALAGMOMETER₁₈
STATIONMASTER₁₅
STEEPLECHASER₂₀
STEREOREGULAR₁₄
STRATIGRAPHER₁₉
STRIKEBREAKER₂₃
SUBCLAVICULAR₂₂
SUBCONTRACTOR₁₉
SUBMANDIBULAR₂₀
SUBMILLIMETER₁₉
SUBSTANTIATOR₁₅
SUBTRIANGULAR₁₆
SUNWORSHIPPER₂₃
SUPERACHIEVER₂₃
SUPERCALENDER₁₈
SUPERCOLLIDER₁₈
SUPERCOLUMNAR₁₉
SUPERCOMPUTER₂₁
SUPERENCIPHER₂₂
SUPEREROGATOR₁₆
SUPERINTENSER₁₅
SUPERMINISTER₁₇
SUPERSPREADER₁₈
SUPERTHRILLER₁₈
SUSTENTACULAR₁₅
SYMPIESOMETER₂₂
TECHNOPRENEUR₂₀
TELECONVERTER₁₈
TERGIVERSATOR₁₇
THANKWORTHIER₂₆
THERMOGRAPHER₂₄
THERMONUCLEAR₂₀
THIMBLERIGGER₂₂
THUNDERSHOWER₂₃
TINTINNABULAR₁₅
TRANQUILLISER₂₂
TRANQUILLIZER₃₁
TRANSMIGRATOR₁₆
TRITUBERCULAR₁₇
TRUSTWORTHIER₁₉
ULTRAFAMILIAR₁₈
UNDERACHIEVER₂₂
UNDERGROUNDER₁₆
UNDERSTRAPPER₁₈
UNSPECTACULAR₁₉
UNTHANKFULLER₂₃
VASOINHIBITOR₂₁
VOLUMENOMETER₂₀
WAFFLESTOMPER₂₆
WEATHERCASTER₂₁
WEATHEROMETER₂₁
WHEREINSOEVER₂₂
WHISTLEBLOWER₂₄
WHITHERSOEVER₂₅
ZOOGEOGRAPHER₂₉

Letters by positionIn 68% of these words the 12th letter is E.

1st letter

S16%
C14%
P10%

6th letter

O16%
E14%
C7%

8th letter

R16%
O10%
I10%

10th letter

A16%
I13%
U12%

11th letter

T35%
L15%
H11%

12th letter

E68%
O18%
A14%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses

Score spreadMost of these words score 19 in Scrabble; PHILOSOPHIZER tops the list with 32. Scores before board bonuses.

1313 points: 1 words
14 points: 5 words
1515 points: 17 words
16 points: 13 words
1717 points: 20 words
18 points: 28 words
1919 points: 33 words
20 points: 23 words
2121 points: 18 words
22 points: 25 words
2323 points: 19 words
24 points: 16 words
2525 points: 11 words
26 points: 10 words
2727 points: 4 words
28 points: 5 words
2929 points: 5 words
30 points: 0 words
3131 points: 3 words
32 points: 1 words

Word	Scrabble	Words With Friends	Dictionaries
PHILOSOPHIZER	32	33	All three
KNICKERBOCKER	31	35	All three
TRANQUILLIZER	31	35	All three
HAEMODIALYZER	31	31	Collins only
PSYCHOBABBLER	29	33	All three
ZOOGEOGRAPHER	29	31	All three
CHARACTERIZER	29	30	Collins only
CYBERSQUATTER	29	31	Collins · NWL
QUARTERDECKER	29	31	Collins only
LEXICOGRAPHER	28	31	All three
BACKSCRATCHER	28	31	Collins only
PROPAGANDIZER	28	32	All three

The endings range from everyday roles such as administrator and schoolteacher to specialist terms such as intracellular and campylobacter. Only seven entries rank among the most common English words, so expect many unfamiliar choices. Dictionary coverage also varies: Collins includes more of these words than either NWL2023 or ENABLE, which matters when you play in a specific tournament system.

13-letter words ending in R at a glance

The list contains 257 words, and seven are classified as common.
Collins includes 234 entries; NWL2023 includes 164, while ENABLE includes 136.
The average score is 20.5 points.
PHILOSOPHIZER leads the high-scoring examples at 32 points.

How many 13-letter words end in R?

There are 257 tournament-dictionary words with this exact length and final letter. The list is much smaller than the 7,018 words ending in S, but it is larger than the 127 words ending in R at fourteen letters. That puts R among the less productive endings at this length, not an impossible rack to build around.

The opening letters show a clear cluster: S begins 42 entries, C begins 35, and P begins 26. Examples include schoolteacher, choreographer, and perpendicular. Those recognizable shapes can help you test a rack, though the seven common entries warn against assuming every long match is everyday vocabulary.

Which 13-letter R-ending words score highest?

PHILOSOPHIZER scores 32 points in the scoring examples. KNICKERBOCKER and TRANQUILLIZER follow at 31 each; HAEMODIALYZER also reaches 31. These long words carry valuable letters, but their length alone does not guarantee a high play: board placement and premium squares still matter.

A practical check is to build from the end first, then verify the full spelling and your game's dictionary. The lists include substantial specialist vocabulary, while Collins, NWL2023, and ENABLE do not accept identical sets. Treat the examples as candidates, not a promise of validity in every ruleset.

Questions people ask

What is the highest-scoring 13-letter word ending in R?

PHILOSOPHIZER is the top-scoring example, at 32 points. KNICKERBOCKER, TRANQUILLIZER, and HAEMODIALYZER each score 31. Those are tile-score examples; the board can change a play's final value.

How many common 13-letter words end in R?

Seven words in this group are classified as common. Familiar examples include administrator, granddaughter, and whistleblower, while many other entries are technical or specialized. The common-word count is a small slice of the full 257-word set.

Are all 257 words accepted in every word game?

No. Collins contains 234 of these words, compared with 164 in NWL2023 and 136 in ENABLE. Check the word list used by your game before relying on an unfamiliar entry, especially for technical terms.

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