393 words
18-letter words ending in S
393 words.
- dimethylhydrazines43
- puzzleheadednesses43
- hydroxytryptamines42
- hyperimmunizations39
- overcommercializes38
- demythologizations37
- hyperpolarizations37
- psychophysiologies37
- commercializations35
- dextroamphetamines35
- hyposensitizations35
- lymphangiographies35
- diphenylhydantoins34
- handcraftsmanships34
- methylnaphthalenes34
- provincializations34
- psychopathologists34
- supercivilizations34
- triskaidekaphobias34
- coccidioidomycoses33
- coccidioidomycosis33
- conceptualizations33
- deoxyribonucleases33
- macrophotographies33
- microphotographers33
- microphotographies33
- overfertilizations33
- photomicrographies33
- piezoelectricities33
- sphygmomanometries33
- thrombophlebitides33
- anagrammatizations32
- decriminalizations32
- dephosphorylations32
- echocardiographers32
- echocardiographies32
- epithelializations32
- fractionalizations32
- glycosaminoglycans32
- individualizations32
- mechanochemistries32
- melodramatizations32
- pentylenetetrazols32
- photolithographies32
- polymorphonuclears32
- quasiperiodicities32
- recrystallizations32
- rehospitalizations32
- revascularizations32
- subcategorizations32
- theatricalizations32
- aerothermodynamics31
- bureaucratizations31
- chemiluminescences31
- dehydrochlorinases31
- dehydrochlorinates31
- electromyographies31
- exceptionabilities31
- forethoughtfulness31
- heavyheartednesses31
- hemoglobinopathies31
- hyperpigmentations31
- impersonalizations31
- inexplicablenesses31
- orthogonalizations31
- orthopsychiatrists31
- overindustrializes31
- particularizations31
- perchloroethylenes31
- photomorphogeneses31
- photomorphogenesis31
- rechromatographies31
- spectroheliographs31
- chlortetracyclines30
- dematerializations30
- depersonalizations30
- generalizabilities30
- hyperconsciousness30
- hypercorrectnesses30
- immunodeficiencies30
- inexhaustibilities30
- inexpressivenesses30
- inexpugnablenesses30
- methemoglobinemias30
- nonfraternizations30
- overembellishments30
- overextrapolations30
- pentachlorophenols30
- quantitativenesses30
- quattuordecillions30
- videoconferencings30
- astrophotographers29
- astrophotographies29
- comprehensibleness29
- consequentialities29
- constitutionalizes29
- dihydroergotamines29
- extemporaneousness29
- hydroelectricities29
- hypersensitiveness29
- hypersensitivities29
- imperceptivenesses29
- inexpressibilities29
- knowledgeabilities29
- microradiographies29
- monochromaticities29
- neuropsychologists29
- organophosphoruses29
- overcommunications29
- phosphodiesterases29
- questionablenesses29
- radiochromatograms29
- spectrohelioscopes29
- spectrophotometers29
- structuralizations29
- trichloroethylenes29
- weatherproofnesses29
- anticommercialisms28
- apprehensivenesses28
- bacteriorhodopsins28
- biocompatibilities28
- communicablenesses28
- counterdeployments28
- denationalizations28
- ethnomethodologies28
- homoscedasticities28
- hydrometallurgists28
- hydrometeorologies28
- hyperalimentations28
- immunohematologies28
- immunopathologists28
- immunoprecipitates28
- impracticabilities28
- industrializations28
- neuropsychiatrists28
- overprotectiveness28
- photoreactivations28
- photoreproductions28
- polyacrylonitriles28
- superminicomputers28
- accumulativenesses27
- appreciativenesses27
- creditworthinesses27
- electrochemistries27
- electrophilicities27
- expressionlessness27
- feeblemindednesses27
- immunoreactivities27
- imperishablenesses27
- inappreciativeness27
- inconceivabilities27
- irreproachableness27
- macroglobulinemias27
- microlepidopterous27
- microreproductions27
- misclassifications27
- muddleheadednesses27
- neurophysiologists27
- noncommutativities27
- renationalizations27
- subclassifications27
- thermoplasticities27
- transistorizations27
- uncompromisingness27
- commensurabilities26
- companionabilities26
- conservativenesses26
- contemptiblenesses26
- countergovernments26
- counterpropagandas26
- dedifferentiations26
- dendrochronologies26
- electrocardiograms26
- ethnomusicologists26
- glomerulonephritis26
- granulocytopoieses26
- granulocytopoiesis26
- hyperrationalities26
- immunosuppressants26
- immunosuppressions26
- impermissibilities26
- imperturbabilities26
- incombustibilities26
- insufferablenesses26
- lightheartednesses26
- microcalorimetries26
- micromanipulations26
- misidentifications26
- noncomparabilities26
- photodissociations26
- photosensitivities26
- praiseworthinesses26
- pseudonymousnesses26
- semipermeabilities26
- shortsightednesses26
- simplemindednesses26
- telecommunications26
- triboluminescences26
- ultraconservatives26
- unchangeablenesses26
- unconvincingnesses26
- adenocarcinomatous25
- archaeoastronomies25
- australopithecines25
- biodegradabilities25
- biotransformations25
- constructivenesses25
- counterconventions25
- discriminabilities25
- exterritorialities25
- faintheartednesses25
- ferroelectricities25
- glottochronologies25
- incommodiousnesses25
- inconclusivenesses25
- inconvertibilities25
- indefatigabilities25
- inhospitablenesses25
- manipulativenesses25
- microdensitometers25
- micrometeorologies25
- mineralocorticoids25
- otherworldlinesses25
- overconcentrations25
- overindebtednesses25
- paleoclimatologies25
- perpendicularities25
- photodisintegrates25
- propertylessnesses25
- pseudotuberculoses25
- pseudotuberculosis25
- reprehensibilities25
- semidomestications25
- superconglomerates25
- ultraconservatisms25
- uncharitablenesses25
- ungrammaticalities25
- uniformitarianisms25
- unpredictabilities25
- unprinciplednesses25
- unprofitablenesses25
- absentmindednesses24
- bloodthirstinesses24
- cantankerousnesses24
- congregationalisms24
- contemptuousnesses24
- counteraccusations24
- curmudgeonlinesses24
- deliberativenesses24
- disconnectednesses24
- dishonorablenesses24
- immeasurablenesses24
- incorruptibilities24
- insusceptibilities24
- irreconcilableness24
- irreplaceabilities24
- lepidopterologists24
- lumpenproletariats24
- nonanthropologists24
- nondeductibilities24
- nondestructiveness24
- postmillennialisms24
- premillenarianisms24
- presumptuousnesses24
- pronounceabilities24
- rambunctiousnesses24
- reconstructionisms24
- ribonucleoproteins24
- subconsciousnesses24
- triboelectricities24
- unaccountabilities24
- unconscionableness24
- valetudinarianisms24
- verisimilitudinous24
- advantageousnesses23
- contradistinctions23
- conversationalists23
- counteradaptations23
- counterrevolutions23
- deconstructionists23
- denominationalisms23
- determinablenesses23
- disreputablenesses23
- electrodepositions23
- electroretinograms23
- greatheartednesses23
- inconsiderableness23
- incorrigiblenesses23
- indestructibleness23
- indiscriminateness23
- indispensabilities23
- indisputablenesses23
- inharmoniousnesses23
- interconnectedness23
- interrelationships23
- invulnerablenesses23
- irremediablenesses23
- irresponsivenesses23
- irretrievabilities23
- landlubberlinesses23
- largeheartednesses23
- magnetoresistances23
- maladministrations23
- malcontentednesses23
- misadministrations23
- multifariousnesses23
- nondiscriminations23
- nonrepresentatives23
- opinionativenesses23
- predestinarianisms23
- remunerativenesses23
- representativeness23
- representativities23
- satisfactorinesses23
- soporiferousnesses23
- superintelligences23
- supersensitivities23
- transcendentalisms23
- unattractivenesses23
- unresponsivenesses23
- unsatisfactoriness23
- congregationalists22
- constitutionalisms22
- consubstantiations22
- counteraggressions22
- countersuggestions22
- disagreeablenesses22
- discontentednesses22
- disintermediations22
- inauspiciousnesses22
- inconsolablenesses22
- incontestabilities22
- intercolumniations22
- interminablenesses22
- interoperabilities22
- interpretabilities22
- irrepressibilities22
- irresponsibilities22
- meretriciousnesses22
- misinterpretations22
- misrepresentations22
- multicellularities22
- noncooperationists22
- obstreperousnesses22
- pertinaciousnesses22
- postmillennialists22
- preposterousnesses22
- radiosensitivities22
- reconstructionists22
- stoutheartednesses22
- substitutabilities22
- superciliousnesses22
- superintellectuals22
- transmissibilities22
- transportabilities22
- unscrupulousnesses22
- vaingloriousnesses22
- counterstrategists21
- disconsolatenesses21
- discourteousnesses21
- disputatiousnesses21
- indissolublenesses21
- intelligiblenesses21
- intermediatenesses21
- intransitivenesses21
- latitudinarianisms21
- nonrevolutionaries21
- redistributionists21
- sacrilegiousnesses21
- transcendentalists21
- unintelligibleness21
- constitutionalists20
- disingenuousnesses20
- gastroenterologies20
- inarticulatenesses20
- insubstantialities20
- intellectualnesses20
- irresistiblenesses20
- neurotransmissions20
- nonarbitrarinesses20
- simultaneousnesses20
- supernaturalnesses20
- supranationalities20
- transilluminations20
- unassailablenesses20
- unreasonablenesses20
- unseasonablenesses20
- unsubstantialities20
- interrelatednesses19
- stereoregularities19
- unrestrainednesses19
- internationalities18
- ostentatiousnesses18
How this list is built
- Every word here comes from ENABLE, a lexicon released to the public domain — 172,823 words. It is the list this site can legally publish in full, and it is stated openly rather than implied.
- The tournament lists — TWL/OWL in North America, Collins/SOWPODS elsewhere — are copyrighted compilations. They are not used here and not merged in. A small number of words will therefore differ from what a given game accepts.
- Scores use the standard tile values (A=1 … Q=10, Z=10) and ignore board bonuses, which depend on where you place the word, not on the word itself.
- Lists are ordered by score, then alphabetically — the order that is useful when you are choosing a play, rather than alphabetical for its own sake.
SOURCE·ENABLE (Enhanced North American Benchmark Lexicon)·Public domain. 172,823 words. Tournament lists (TWL, Collins) are copyrighted and not used.·REVIEWED AUG 2026
SOURCE·ENABLE public-domain lexicon (172,823 words)·lists and scores computed from the lexicon, see method·REVIEWED AUG 2026
