9-letter words ending in M
9-letter words ending in M number 774, including familiar choices such as criticism, mechanism, classroom, and algorithm.
27 of 774 are everyday words (3%). Mostly rare words: great for Scrabble, tough for daily puzzles.
S ends the most 9-letter words (16,180); V ends the fewest (1). M ranks #11 of 26. The bar under each letter shows the size of its list.
Common words
- CRITICISM15
- MECHANISM18
- TERRORISM11
- CLASSROOM13
- TRANSFORM14
- ALGORITHM15
- PETROLEUM13
- SOCIALISM13
- COMMUNISM17
- ECOSYSTEM16
- ALUMINIUM13
- SYMPOSIUM18
- COURTROOM13
- POTASSIUM13
- MAGNESIUM14
- SYMBOLISM18
- CONTINUUM13
- VANDALISM15
- EXTREMISM20
- ULTIMATUM13
- PLUTONIUM13
- GYMNASIUM17
- PALLADIUM14
- MARTYRDOM17
- OVERWHELM20
- MODERNISM14
- PSEUDONYM17
All valid words 774
- ABSURDISM14
- ACADEMISM16
- ACHAENIUM16
- ACINIFORM16
- AIRSTREAM11
- ALBINOISM13
- ALGORITHM15
- ALLOPLASM13
- ALUMINIUM13
- AMERICIUM15
- AMORALISM13
- AMORPHISM18
- ANABOLISM13
- ANALOGISM12
- ANARCHISM16
- ANEMOGRAM14
- ANGIOGRAM13
- ANGLEWORM15
- ANGLICISM14
- ANGUIFORM15
- ANICONISM13
- ANIMALISM13
- ANIMATISM13
- ANOESTRUM11
- ANTHODIUM15
- ANTHURIUM14
- ANTISERUM11
- ANTIVENOM14
- APRIORISM13
- ARBITRIUM13
- ARBORETUM13
- ARROWWORM17
- ASPHALTUM16
- ASPLENIUM13
- ATHENAEUM14
- ATONALISM11
- AUDIOGRAM13
- AUTEURISM11
- AUTHORISM14
- AUTOECISM13
- AVISANDUM15
- AVIZANDUM24
- BACCIFORM20
- BACTERIUM15
- BARATHRUM16
- BARBARISM15
- BARNSTORM13
- BASHAWISM19
- BEADLEDOM15
- BEDLAMISM16
- BEGGARDOM16
- BERKELIUM17
- BERYLLIUM16
- BIBLICISM17
- BIOLOGISM14
- BIORHYTHM22
- BISHOPDOM19
- BITSTREAM13
- BLINDWORM17
- BLOODWORM17
- BOARDROOM14
- BOTULINUM13
- BRAINSTEM13
- BREADROOM14
- BREAKROOM17
- BROADBRIM16
- BROADLOOM14
- BROMINISM15
- BROMOFORM18
- BRONCHIUM18
- BRUMMAGEM18
- BRUTALISM13
- BUBBLEGUM18
- BUMBLEDOM18
- BURSIFORM16
- CABBALISM17
- CABLEGRAM16
- CACIQUISM24
- CACTIFORM18
- CAESARISM13
- CAIRNGORM14
- CALCANEUM15
- CALDARIUM14
- CALLIGRAM14
- CALVARIUM16
- CAMBIFORM20
- CANDYGRAM18
- CAPITULUM15
- CAPRIFORM18
- CARBONIUM15
- CAREERISM13
- CARNALISM13
- CARTELISM13
- CARTOGRAM14
- CASTELLUM13
- CASTOREUM13
- CASUALISM13
- CATACLASM15
- CATACLYSM18
- CATAPLASM15
- CATECHISM18
- CAULIFORM16
- CAUTERISM13
- CENTIGRAM14
- CERASTIUM13
- CHALUTZIM25
- CHAZZANIM34
- CHAZZENIM34
- CHECKROOM22
- CHELIFORM19
- CHEONGSAM17
- CHERNOZEM25
- CHIMERISM18
- CHURCHISM21
- CIRRIFORM16
- CLADOGRAM15
- CLASSROOM13
- CLAUSTRUM13
- CLAVIFORM19
- CLINGFILM17
- CLITELLUM13
- CLOAKROOM17
- COBRIFORM18
- COCAINISM15
- COCCIDIUM18
- COENOBIUM15
- COFFERDAM20
- COHYPONYM24
- COLCHICUM20
- COLLEGIUM14
- COLLODIUM14
- COLLUVIUM16
- COLLYRIUM16
- COLOSSEUM13
- COLOSTRUM13
- COLUMBIUM17
- COMBRETUM17
- COMMENDAM18
- COMMUNISM17
- CONTAGIUM14
- CONTINUUM13
- CONUNDRUM14
- CORDIFORM17
- CORMIDIUM16
- CORNIFORM16
- COUPLEDOM16
- COURTROOM13
- CREDENDUM15
- CRETINISM13
- CRIBELLUM15
- CRITERIUM13
- CRITICISM15
- CROSSBEAM15
- CROTALISM13
- CRUCIFORM18
- CRYPTOGAM19
- CRYPTONYM21
- CTENIDIUM14
- CTENIFORM16
- CUBICULUM17
- CUCKOLDOM20
- CUNEIFORM16
- CURIALISM13
- CURVIFORM19
- CYCLICISM20
- CYMBIDIUM21
- CYMBIFORM23
- CYSTIFORM19
- CYTOPLASM18
- DALTONISM12
- DECENNIUM14
- DEFEATISM15
- DELIQUIUM21
- DENIALISM12
- DENTALIUM12
- DENTIFORM15
- DENTURISM12
- DEPROGRAM15
- DESMODIUM15
- DESPOTISM14
- DEUTERIUM12
- DIABOLISM14
- DIACHYLUM20
- DIACODIUM15
- DIALOGISM13
- DIAPHRAGM18
- DIAPIRISM14
- DIATRETUM12
- DIAZONIUM21
- DIBBUKKIM24
- DICALCIUM16
- DICHASIUM17
- DICHROISM17
- DICLINISM14
- DICROTISM14
- DILTIAZEM21
- DISAFFIRM18
- DISCIFORM17
- DISESTEEM12
- DISINFORM15
- DITHELISM15
- DOGMATISM15
- DORONICUM14
- DRACONISM14
- DRAGONISM13
- DREPANIUM14
- DUFFERDOM19
- DUFFERISM18
- DUSTSTORM12
- DYBBUKKIM27
- EARTHWORM17
- ECOMUSEUM15
- ECONOMISM15
- ECOSYSTEM16
- ECTOPLASM15
- ECTOTHERM16
- ECTROPIUM15
- ECUMENISM15
- EFFLUVIUM20
- EGOTHEISM15
- ELATERIUM11
- ELBOWROOM16
- EMBLOSSOM15
- EMOTIVISM16
- EMPLECTUM17
- ENCOLPIUM15
- ENDOPLASM14
- ENDOSPERM14
- ENDOSTEUM12
- ENDOTHERM15
- ENFREEDOM15
- ENTROPIUM13
- EPICEDIUM16
- EPICENISM15
- EPICURISM15
- EPIGONISM14
- EPILOBIUM15
- EPIMERISM15
- EPIMYSIUM18
- EPIPHRAGM19
- EPIPOLISM15
- EQUISETUM20
- EREMITISM13
- EROTICISM13
- ERUCIFORM16
- ERYTHRISM17
- ESOTERISM11
- ETHNICISM16
- EUNUCHISM16
- EUPHEMISM18
- EUPHONISM16
- EUPHONIUM16
- EURYTHERM17
- EXCAMBIUM24
- EXCERPTUM22
- EXOGENISM19
- EXOTICISM20
- EXPERTISM20
- EXTREMISM20
- FALANGISM15
- FALCIFORM19
- FASTIGIUM15
- FETICHISM19
- FETISHISM17
- FEUDALISM15
- FIBRIFORM19
- FIRESTORM14
- FLABELLUM16
- FLAGELLUM15
- FLEROVIUM17
- FLESHWORM20
- FLORIFORM17
- FLUNKYISM21
- FOREGLEAM15
- FORMALISM16
- FORMULISM16
- FOVEIFORM20
- FRUITWORM17
- FUNGIFORM18
- FUSIONISM14
- GAELICISM14
- GALEIFORM15
- GALLICISM14
- GALVANISM15
- GANDERISM13
- GARGARISM13
- GASCONISM14
- GASTRAEUM12
- GELSEMIUM14
- GENTILISM12
- GERMANIUM14
- GERMPLASM16
- GIGANTISM13
- GLASSWORM15
- GLOBALISM14
- GLUCINIUM14
- GOTHICISM17
- GREENROOM12
- GRILLROOM12
- GUARDROOM13
- GYMNASIUM17
- GYNAECEUM17
- GYNAECIUM17
- GYNOECIUM17
- HAILSTORM14
- HARMONIUM16
- HEALTHISM17
- HEARTWORM17
- HECTOGRAM17
- HECTORISM16
- HEDYSARUM18
- HEIGHTISM18
- HEKTOGRAM19
- HELIOGRAM15
- HELVETIUM17
- HERBALISM16
- HERBARIUM16
- HERMETISM16
- HERMITISM16
- HEROINISM14
- HETAERISM14
- HETAIRISM14
- HETERONYM17
- HIERACIUM16
- HIEROGRAM15
- HIPPIEDOM19
- HIRSUTISM14
- HISPANISM16
- HISTOGRAM15
- HISTORISM14
- HOODOOISM15
- HORDEOLUM15
- HOSPITIUM16
- HOUSEROOM14
- HOYDENISM18
- HYBRIDISM20
- HYDRONIUM18
- HYLOZOISM26
- HYPERICUM21
- HYPHENISM22
- HYPNOTISM19
- HYPOGAEUM20
- IDIOPLASM14
- IMPLUVIUM18
- INDECORUM14
- INTERFIRM14
- INTERTERM11
- IRENICISM13
- ISOBARISM13
- ISOMERISM13
- JESUITISM18
- JETSTREAM18
- JOCKEYISM27
- JOINTWORM21
- JUNGLEGYM23
- JUNKERDOM23
- KABBALISM19
- KADDISHIM20
- KAISERDOM16
- KAISERISM15
- KARYOGRAM19
- KIBBUTZIM28
- KISSAGRAM16
- KISSOGRAM16
- KLEPHTISM20
- KLEZMORIM26
- LABDACISM16
- LABIALISM13
- LABOURISM13
- LANCIFORM16
- LANTHANUM14
- LARVIFORM17
- LATHYRISM17
- LENTIFORM14
- LIBRIFORM16
- LICHENISM16
- LIGNIFORM15
- LIGUSTRUM12
- LITERATIM11
- LITURGISM12
- LOGARITHM15
- LORAZEPAM22
- LUNCHROOM16
- MACHZORIM27
- MACROCOSM17
- MAELSTROM13
- MAENADISM14
- MAGIANISM14
- MAGMATISM16
- MAGNALIUM14
- MAGNESIUM14
- MAGNETISM14
- MAMMIFORM20
- MAMMOGRAM18
- MAMMONISM17
- MANNERISM13
- MANUBRIUM15
- MARSUPIUM15
- MARTYRDOM17
- MARTYRIUM16
- MASHGIHIM20
- MASOCHISM18
- MASTERDOM14
- MAUSOLEUM13
- MAZAEDIUM23
- MECHANISM18
- MELIORISM13
- MEMOIRISM15
- MENSTRUUM13
- MENTALISM13
- MEPHITISM18
- MESCALISM15
- MESMERISM15
- METAPLASM15
- METAXYLEM23
- METEORISM13
- METHODISM17
- METRICISM15
- MICROBEAM17
- MICROCOSM17
- MICROFILM18
- MICROFORM18
- MICROGRAM16
- MIDRASHIM17
- MIDSTREAM14
- MILLIGRAM14
- MISBESEEM15
- MISESTEEM13
- MISINFORM16
- MISONEISM13
- MITRIFORM16
- MODERNISM14
- MOLLUSCUM15
- MONACHISM18
- MONERGISM14
- MONGOLISM14
- MONKEYISM20
- MONOECISM15
- MOSAICISM15
- MOSCOVIUM18
- MRIDAMGAM17
- MRIDANGAM15
- MULLAHISM16
- MULTIATOM13
- MULTIFORM16
- MULTIGERM14
- MULTIROOM13
- MUMMIFORM20
- MUTUALISM13
- MYELOGRAM17
- MYSTICISM18
- MYTHICISM21
- NARCOTISM13
- NELUMBIUM15
- NEODYMIUM17
- NEOLOGISM12
- NEOTERISM11
- NEPHALISM16
- NEPHOGRAM17
- NEPTUNIUM13
- NEUROGRAM12
- NIGGERDOM14
- NIGGERISM13
- NONRANDOM12
- NONSYSTEM14
- NONTHEISM14
- NOODLEDOM13
- NYMPHAEUM21
- OCCULTISM15
- OPERCULUM15
- OPOBALSAM15
- OPUSCULUM15
- ORPHANISM16
- OSTEODERM12
- OSTRACISM13
- OUTSCREAM13
- OVERCLAIM16
- OVERGLOOM15
- OVERWHELM20
- PACHYDERM22
- PADRONISM14
- PALLADIUM14
- PANDERISM14
- PANEGOISM14
- PANLOGISM14
- PANTHEISM16
- PARAMYLUM18
- PASSIVISM16
- PASTORIUM13
- PAUPERDOM16
- PAUPERISM15
- PEDANTISM14
- PELMANISM15
- PELVIFORM19
- PENNALISM13
- PENNIFORM16
- PENTAGRAM14
- PERCIFORM18
- PERINAEUM13
- PERIPLASM15
- PERISPERM15
- PESSIMISM15
- PETERSHAM16
- PETROGRAM14
- PETROLEUM13
- PHAENOGAM17
- PHANTASIM16
- PHENAKISM20
- PHONETISM16
- PHONOGRAM17
- PHOTOGRAM17
- PHYSICISM21
- PICTOGRAM16
- PIRACETAM15
- PIROPLASM15
- PISCIFORM18
- PLACODERM16
- PLANOGRAM14
- PLATONISM13
- PLEXIFORM23
- PLURALISM13
- PLUTONISM13
- PLUTONIUM13
- POETICISM15
- POLLINIUM13
- POLYGONUM17
- POLYPIDOM19
- POMOERIUM15
- POTASSIUM13
- PRACTICUM17
- PREDATISM14
- PREINFORM16
- PRELATISM13
- PREREFORM16
- PRESCUTUM15
- PRESIDIUM14
- PRESSROOM13
- PRETTYISM16
- PRINCEDOM16
- PRIVATISM16
- PROOEMIUM15
- PROOFROOM16
- PROPODEUM16
- PROREFORM16
- PROTODERM14
- PRYTANEUM16
- PSEUDONYM17
- PTERYGIUM17
- PUERILISM13
- PURDONIUM14
- PUZZLEDOM32
- PYCNIDIUM19
- PYELOGRAM17
- PYRETHRUM19
- PYROCERAM18
- QUAESITUM20
- QUERCETUM22
- QUICKBEAM28
- QUITCLAIM22
- QUIXOTISM27
- RABBINISM15
- RACIALISM13
- RADIOGRAM13
- RAINSTORM11
- RALLIFORM14
- RANTERISM11
- RASCALDOM14
- RASCALISM13
- REACCLAIM15
- REBAPTISM15
- REBLOSSOM13
- RECONFIRM16
- REDDENDUM14
- REFORMISM16
- REPROGRAM14
- REPTILIUM13
- RESPONSUM13
- RESTIFORM14
- RETICULUM13
- RHIPIDIUM17
- RHIZOBIUM25
- RHOPALISM16
- RHOTACISM16
- RITUALISM11
- ROSTELLUM11
- ROUNDWORM15
- ROUTINISM11
- RUSTICISM13
- RUTHENIUM14
- SABBATISM15
- SACCHARUM18
- SACCIFORM18
- SACHEMDOM19
- SACRARIUM13
- SAGAPENUM14
- SALESROOM11
- SALICETUM13
- SALPIFORM16
- SANDSTORM12
- SARGASSUM12
- SARMENTUM13
- SATURNISM11
- SAVAGEDOM16
- SCALOGRAM14
- SCIENTISM13
- SCREWWORM19
- SCUTELLUM13
- SCUTIFORM16
- SENSILLUM11
- SENSORIUM11
- SEPARATUM13
- SEPTARIUM13
- SEPTIFORM16
- SERIALISM11
- SERRIFORM14
- SERVILISM14
- SEXUALISM18
- SHAMANISM16
- SHAMMASIM18
- SHAMMOSIM18
- SHEIKHDOM22
- SHELFROOM17
- SHITSTORM14
- SHOCHETIM19
- SIALOGRAM12
- SIDDHUISM16
- SIGMATISM14
- SINGLEDOM13
- SNOWSTORM14
- SOCIALISM13
- SOCIOGRAM14
- SOLIPSISM13
- SOVIETISM14
- SPINIFORM16
- SPIRALISM13
- SPIRILLUM13
- SPIRITISM13
- SPIROGRAM14
- SPODOGRAM15
- SPORIDESM14
- SPORIDIUM14
- SQUIREDOM21
- STACKROOM17
- STAFFROOM17
- STATEROOM11
- STEADICAM14
- STILLROOM11
- STIPIFORM16
- STOCKROOM17
- STOMODEUM14
- STOREROOM11
- STRATAGEM12
- STRAWWORM17
- STRONGARM12
- STRONTIUM11
- STYLIFORM17
- STYLITISM14
- STYROFOAM17
- SUBMENTUM15
- SUBPHYLUM21
- SUBSYSTEM16
- SUGARPLUM14
- SULFONIUM14
- SUPERATOM13
- SUPERFARM16
- SUPERFIRM16
- SUTTEEISM11
- SWARAJISM21
- SYLLABISM16
- SYLLOGISM15
- SYMBOLISM18
- SYMPODIUM19
- SYMPOSIUM18
- SYNANGIUM15
- SYNCYTIUM19
- SYNEDRIUM15
- SYNERGISM15
- SYNOECISM16
- TACHOGRAM17
- TALLAISIM11
- TALLITHIM14
- TALMUDISM14
- TANTALISM11
- TARANTISM11
- TARAXACUM20
- TAURIFORM14
- TECTIFORM16
- TECTONISM13
- TEGMENTUM14
- TELLURIUM11
- TEMAZEPAM24
- TENACULUM13
- TENEBRISM13
- TENTORIUM11
- TEPHIGRAM17
- TERMINISM13
- TERRAFORM14
- TERRARIUM11
- TERRORISM11
- TETRAGRAM12
- THANATISM14
- THEREFROM17
- THRALLDOM15
- TORMENTUM13
- TRANSFORM14
- TRAPEZIUM22
- TRENDYISM15
- TRIBADISM14
- TRIBALISM13
- TRIENNIUM11
- TRIFOLIUM14
- TRIFORIUM14
- TRIMERISM13
- TRIPUDIUM14
- TRISODIUM12
- TRITHEISM14
- TRITICISM13
- TSADDIKIM17
- TSADDIQIM22
- TUTIORISM11
- TZADDIKIM26
- TZADDIQIM31
- ULTIMATUM13
- UNCHRISOM16
- UNCONFORM16
- UNDERBRIM14
- UNFREEDOM15
- UNGUENTUM12
- UNGUIFORM15
- UNREALISM11
- UNUNUNIUM11
- UREDINIUM12
- UROPYGIUM17
- VACCINIUM18
- VAMPIRISM18
- VANDALISM15
- VASOSPASM16
- VERBALISM16
- VERBASCUM18
- VERMIFORM19
- VERSIFORM17
- VESTIGIUM15
- VIDEOGRAM16
- VIKINGISM19
- VILLIFORM17
- VIRGINIUM15
- VITICETUM16
- VITRIFORM17
- VOLCANISM16
- VOLTINISM14
- VOODOOISM15
- VORTICISM16
- VOYEURISM17
- VULCANISM16
- VULGARISM15
- VULPINISM16
- VULSELLUM14
- VULTURISM14
- VULVIFORM20
- WAGENBOOM17
- WELFARISM17
- WHEATWORM20
- WHEREFROM20
- WHITEBEAM19
- WINDSTORM15
- WITTICISM16
- YTTERBIUM16
- YUPPIEDOM19
- ZEALOTISM20
- ZIRCONIUM22
- ZOOCYTIUM25
- ZOOTHEISM23
- ZYGANTRUM24
- ZYGOSPERM26
Highest-scoring words
| Word | Scrabble | Words With Friends | Dictionaries |
|---|---|---|---|
| CHAZZANIM | 34 | 36 | All three |
| CHAZZENIM | 34 | 36 | All three |
| PUZZLEDOM | 32 | 36 | Collins only |
| TZADDIQIM | 31 | 32 | Collins only |
| KIBBUTZIM | 28 | 32 | All three |
| QUICKBEAM | 28 | 32 | Collins only |
| MACHZORIM | 27 | 29 | All three |
| QUIXOTISM | 27 | 29 | All three |
| DYBBUKKIM | 27 | 30 | Collins only |
| JOCKEYISM | 27 | 30 | Collins only |
| KLEZMORIM | 26 | 29 | All three |
| HYLOZOISM | 26 | 26 | All three |
The ending spans everyday terms and specialist vocabulary, so the full set is much broader than the words you are likely to use in ordinary conversation. Criticism and classroom are easy to recognize; symposium and aluminium are less routine. Dictionary coverage also varies, which matters when you are checking a play for a particular game.
How many 9-letter words ending in M are there?
- There are 774 qualifying entries across the tournament dictionaries.
- Collins includes 759 of these words; NWL2023 includes 528.
- ENABLE includes 394 entries, fewer than either Collins or NWL2023.
- Only 27 entries fall among the most common English words.
- Criticism, mechanism, and classroom are recognizable examples.
Which words and starting letters stand out?
The opening letters are led by C, with 94 entries, followed by S with 89. P contributes 76, while M begins 69. If you have both the final M and the first letter, a C or S is a better first filter than an uncommon opening.
Familiar examples include criticism, mechanism, classroom, algorithm, and ecosystem. Other entries, such as petroleum, socialism, and symbolism, show how often this ending appears in longer abstract or technical terms. The list has 635 entries with definitions, but many remaining entries are not everyday vocabulary.
Length changes the size of this ending group surprisingly little around nine letters: 8-letter words ending in M number 778, just four more than the 9-letter set. The 10-letter group drops to 578, so a one-letter change in your rack constraint can sharply narrow the options.
What do the high scores tell you?
The top Scrabble score is 34, shared by chazzanim and chazzenim; puzzledom follows at 32. Those spellings are far less familiar than criticism, so a high score alone does not make a word a practical play. Check the letters you actually hold before chasing a rare entry.
For 9-letter words ending in M, score is only one filter: the total set includes entries from different tournament dictionaries, and their coverage differs. Confirm your game's word list before playing an unfamiliar term. A strong approach is to search by known letters first, then weigh the score of the candidates that fit.
Questions people ask
How many 9-letter words end in M?
What is the highest-scoring 9-letter word ending in M?
Which starting letter is most common for these words?
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