243 words
18-letter words with U
243 words.
- puzzleheadednesses43
- hemidemisemiquaver40
- hyperimmunizations39
- immunocytochemical36
- mucopolysaccharide35
- quantificationally35
- semiquantitatively35
- hypercoagulability34
- supercivilizations34
- conceptualizations33
- deoxyribonucleases33
- phosphoglucomutase33
- phytohemagglutinin33
- pseudoparenchymata33
- submicroscopically33
- claustrophobically32
- inconsequentiality32
- individualizations32
- overindustrialized32
- polymorphonuclears32
- quasiperiodicities32
- revascularizations32
- subcategorizations32
- autobiographically31
- bureaucratizations31
- chemiluminescences31
- electrooculography31
- forethoughtfulness31
- neuropsychological31
- overindustrializes31
- particularizations31
- agammaglobulinemic30
- chlorofluorocarbon30
- constitutionalized30
- counterquestioning30
- hydrometallurgical30
- hyperconsciousness30
- immunodeficiencies30
- immunopathological30
- inexhaustibilities30
- inexpugnablenesses30
- neuropharmacologic30
- quantitativenesses30
- quattuordecillions30
- spectrofluorometry30
- consequentialities29
- constitutionalizes29
- extemporaneousness29
- immunofluorescence29
- immunoprecipitated29
- incommensurability29
- neurophysiological29
- neuropsychologists29
- organophosphoruses29
- overcommunications29
- questionablenesses29
- somnambulistically29
- structuralizations29
- thermoluminescence29
- agammaglobulinemia28
- communicablenesses28
- counterdeployments28
- counterprogramming28
- deinstitutionalize28
- distinguishability28
- ethnomusicological28
- hydrometallurgists28
- immunohematologies28
- immunohematologist28
- immunopathologists28
- immunoprecipitates28
- industrializations28
- institutionalizing28
- neuropsychiatrists28
- photoreproductions28
- polyribonucleotide28
- superminicomputers28
- supersophisticated28
- ultramicroscopical28
- accumulativenesses27
- immunoreactivities27
- intercommunicating27
- macroglobulinemias27
- microencapsulating27
- microlepidopterous27
- microreproductions27
- muddleheadednesses27
- neurophysiologists27
- noncommutativities27
- reinstitutionalize27
- spectrofluorimeter27
- spectrofluorometer27
- subclassifications27
- ultracentrifugally27
- uncompromisingness27
- bourgeoisification26
- commensurabilities26
- countergovernments26
- counterinfluencing26
- counterintuitively26
- counterpropagandas26
- ethnomusicologists26
- glomerulonephritis26
- granulocytopoieses26
- granulocytopoiesis26
- immunosuppressants26
- immunosuppressions26
- imperturbabilities26
- incombustibilities26
- insufferablenesses26
- intercommunication26
- intraventricularly26
- microencapsulation26
- micromanipulations26
- pseudonymousnesses26
- telecommunications26
- triboluminescences26
- ultraconservatives26
- ultrasophisticated26
- unchangeablenesses26
- unconvincingnesses26
- unenthusiastically26
- adenocarcinomatous25
- australopithecines25
- constructivenesses25
- counteradvertising25
- counterconventions25
- counterreformation25
- incommodiousnesses25
- inconclusivenesses25
- manipulativenesses25
- neuroendocrinology25
- perpendicularities25
- pseudotuberculoses25
- pseudotuberculosis25
- superconglomerates25
- ultraconservatisms25
- uncharitablenesses25
- ungrammaticalities25
- uniformitarianisms25
- unpredictabilities25
- unprinciplednesses25
- unprofitablenesses25
- anticounterfeiting24
- cantankerousnesses24
- contemptuousnesses24
- counteraccusations24
- counterculturalism24
- curmudgeonlinesses24
- electroluminescent24
- immeasurablenesses24
- incorruptibilities24
- insusceptibilities24
- lumpenproletariats24
- nondeductibilities24
- nondestructiveness24
- presumptuousnesses24
- pronounceabilities24
- rambunctiousnesses24
- reconstructionisms24
- ribonucleoproteins24
- subconsciousnesses24
- ultrarevolutionary24
- unaccountabilities24
- unconscionableness24
- valetudinarianisms24
- verisimilitudinous24
- advantageousnesses23
- counteradaptations23
- counterdemonstrate23
- countereducational23
- counterpetitioning23
- counterrevolutions23
- deconstructionists23
- disreputablenesses23
- indestructibleness23
- indisputablenesses23
- inharmoniousnesses23
- invulnerablenesses23
- landlubberlinesses23
- multifariousnesses23
- remunerativenesses23
- soporiferousnesses23
- superadministrator23
- superintelligences23
- supersensitivities23
- unattractivenesses23
- unconstitutionally23
- unresponsivenesses23
- unsatisfactoriness23
- constitutionalisms22
- consubstantiations22
- counteraggressions22
- countersuggestions22
- entrepreneurialism22
- inauspiciousnesses22
- intercolumniations22
- intersubstitutable22
- meretriciousnesses22
- multicellularities22
- obstreperousnesses22
- pertinaciousnesses22
- preposterousnesses22
- reconstructionists22
- stoutheartednesses22
- substitutabilities22
- superciliousnesses22
- superintellectuals22
- unscrupulousnesses22
- vaingloriousnesses22
- counterstrategists21
- discourteousnesses21
- disputatiousnesses21
- indissolublenesses21
- latitudinarianisms21
- nonrevolutionaries21
- redistributionists21
- sacrilegiousnesses21
- transubstantiating21
- unintelligibleness21
- constitutionalists20
- counterinstitution20
- counterretaliation20
- disingenuousnesses20
- inarticulatenesses20
- insubstantialities20
- intellectualnesses20
- neurotransmissions20
- simultaneousnesses20
- supernaturalnesses20
- supranationalities20
- transilluminations20
- transubstantiation20
- ultranationalistic20
- unassailablenesses20
- unreasonablenesses20
- unseasonablenesses20
- unsubstantialities20
- institutionalising19
- stereoregularities19
- unrestrainednesses19
- interinstitutional18
- 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
