20-Letter Words Containing: I,I,O,S
(In Any Order)
There are 88 20 letter words,
576 20 letter phrases and
0 20 letter abbr's with
I,I,O,S in.
Best Scoring 20 Letter Words With: I,I,O,S
Expand? | Word | Save? | Length | Usage | Points | Type | |
---|---|---|---|---|---|---|---|
We couldn't find any valid Scrabble US words with a length of 20. Try changing the version of the game.
Tip: Scrabble EU allows far more words than US! |
All 20 Letter Words
Words (88)
overenthusiasticallyinstitutionalizationunsatisfactorinessesuncompromisingnessesultrasegregationistsultrarevolutionariesultramicroscopicallyultracentrifugationstransformationalistssuperspecializationsspectroheliographiesrepresentationalistsrepresentationalismsreinstitutionalizingreindustrializationsreconceptualizationsradiopharmaceuticalsradioimmunoassayablepseudosophisticationprofessionalizationsphotointerpretationsphotodisintegrationsphosphatidylcholinesphiloprogenitivenessphenylthiocarbamidesoverintellectualizesoverdifferentiationsnondenominationalismneuropsychiatricallyneurophysiologicallyneuroendocrinologistneuroendocrinologiesmischaracterizationsmicropaleontologistsmicroelectrophoresismicrocrystallinitiesmagnetofluiddynamicskeratoconjunctivitesirreconcilablenessesinterstratificationsintellectualizationsinconsiderablenessesinconsequentialitiesincomprehensiblenessincommensurabilitiesimmunoprecipitationshyperparathyroidismshypercoagulabilitieshydrochlorothiazideshistocompatibilitiesglomerulonephritidesencephalomyocarditiselectrophysiologistselectrophysiologicaldimethylnitrosaminesdepartmentalizationsdeoxyribonucleotidesdeinstitutionalizingdeindustrializationsdehydrochlorinationscytodifferentiationscountermobilizationscounterintelligencescounterconditioningsconventionalizationscontradistinguishingantifluoridationistsanticonservationistsantiauthoritarianismanthropocentricitiesadrenocorticotropinsadrenocorticosteroidsemiautobiographicalpseudohermaphroditicnoninstitutionalizednoninstitutionalisednephroangiosclerosiskeratoconjunctivitisinternationalisationincontrovertiblenessimmunohistochemistryhyperadrenocorticismhistoincompatibilityheterobasidiomycetesdestructive-metaboliccounterrevolutionistcounter-revolutionistcompartmentalisationPhrases (576)
woodrow wilson guthriewilliam wilkie collinswilliam stanley jevonswilliam lloyd garrisonwilliam hyde wollastonwilliam henry harrisonvirgil garnett thomsonvaricella zoster virusuniversity of nebraskatwo-dimensional figuretunisian monetary unitthomas lanier williamstelopea speciosissimasuperfamily coccoideasuborder strepsirhinisuborder myxiniformessubclass lepidosauriasubclass commelinidaesphenisciform seabirdsolidago multiradiatasoftware optimizationsocial justice warriorsir karl raimund poppersingle-valued functionsimple harmonic motionsignature recognitionselective informationsedative-hypnotic drugsecond coming of christscipio africanus majorsaponaria officinalissaccharum officinarumrobert william servicerhizopogon idahoensisresurrection of christresident commissionerreconstruction periodracial discriminationpseudotsuga menziesiiprumnopitys taxifoliaprofessional relationprinciple of parsimonyprescription medicinepollachius pollachiusplatanus occidentalisplasminogen activatorpierre simon de laplacephotographic emulsionpersonality inventorypersonal relationshippass with flying colorsorder sphenisciformesorder mycelia steriliaorder accipitriformesobstruction of justicenymphicus hollandicusnutritionist's calorieneisseria gonorrhoeaenasturtium officinalemilitary installationmasticophis flagellummarket capitalisationmadonna louise cicconeluscinia megarhynchosludwig mies van der rohelophophora williamsiiliving accommodationslinguistic competencelevisticum officinalelateral epicondylitisjudgement of dismissaljean-baptiste poquelinislamic calendar monthinstruction executionindochinese peninsulaindirect transmissionhomolosine projectionhans christian oerstedgleditsia triacanthosgeorges henri lemaitregenus phoenicophoriumfriendly relationshipfouquieria columnarisfederation of malaysiafamily tachyglossidaefamily pseudococcidaefamily passifloraceaefamily gasterosteidaeestonian monetary unitemotional disturbanceeleocharis aciculariseicosapentaenoic acidedward williams morleyecological successiondivision tracheophytadisplacement reactiondegenerative disorderctenocephalides caniscortinarius violaceuscontradiction in termsconsecutive operationcomparative anatomistcommunity of interestscommercial instrumentcommercial enterpriseclassification systemchristopher isherwoodchlamydia trachomatischaradrius morinelluscentropus phasianinuscase-to-infection ratiocarter administrationcardinal compass pointcaprimulgus vociferuscapital of switzerlandcapital of south africacapital of sierra leonecapital of saudi arabiacapital of rhode islandcapital of mississippicapital of afghanistancalendula officinalisbusiness relationshipbusiness organizationbusiness organisationbritish pound sterlingbotaurus lentiginosusblue ribbon commissionbasidiomycetous fungiaustrian monetary unitatmospheric conditionartemisia californicaarcheological remainsappalachian mountainsanemopsis californicaamsinckia grandifloraambrose gwinett bierceambloplites rupestrisalice malsenior walkeralexander iii of russiaadenosine diphosphateacquisition agreementaboriginal australianzalophus californicusyosemite national parkyellow-leaf sickle pineximenesia encelioidesxenorhyncus asiaticusxanthoma disseminatumwyethia helianthoideswolstonian glaciationwilliam richard morriswilliam nunn lipscom jr.william felton russellwhite dog's-tooth violetvoice in the wildernessvincetoxicum hirsutumvigdis finnbogadottirvestibule of the vaginaverbesina encelioidesvena labialis superiorvena labialis inferiorvena facialis anteriorvaleriana officinalisvaccinium caespitosumustilaginoidea virensuniversity of michiganuniversal propositionunited states air forceunited church of christungradable oppositiontwelve tribes of israeltriostium perfoliatumtrichomanes speciosumtrichomanes reniformetransversus abdoministranscortical aphasiatrachinotus carolinustoxic industrial wastetonsilla pharyngealistolypeutes tricinctustheory of dissociationtelevision-camera tubetelevision pickup tubetelevision newscastertamiasciurus douglasisysteme internationalsystema respiratoriumsympathetic vibrationsylvilagus floridanusswietinia macrophyllaswainsona grandifloraswainsona galegifoliasurvival of the fittestsuperior labial arterysuperior cerebral veinsuperfamily tineoideasuperfamily muscoideasuborder plesiosauriasubliminal perceptionsubfamily taxodiaceaesubfamily mimosoideaesubfamily hydromyinaesubclass zoomastiginasubclass telosporidiasteatornis caripensisstatute of limitationsstatistical procedurestandard transmissionstaffordshire terriersplit-half correlationspiranthes porrifoliaspecial-interest groupspartina cynosuroidessouth american sea lionsource of illuminationsomalian monetary unitsolidago sempervirenssoleirolia soleiroliisoftware optimisationsocial stratificationsocial security numbersocial anthropologistsmiledon californicusslip-tongue log skiddersisymbrium officinalesir oliver joseph lodgesir james young simpsonsir geoffrey wilkinsonsinusoidal projectionsiderochrestic anemiasideroblastic anaemiasexual discriminationsemiautomatic firearmsecond vatican councilseborrheic dermatitisscouting organizationscleroderma flavidiumscintillation counterscintillating scotomaschizopetalon walkerischeduled territoriessceloglaux albifaciesscaphiopus bombifronssaxifraga stoloniferasanvitalia procumbenssanitation departmentsalvinia rotundifoliasalvelinus fontinalissalpichroa rhomboideasalah al-din battalionssaint francis of assisirumohra adiantiformisrubus idaeus strigosusrevolutions per minuterespiratory infectionrespiratory alkalosisrequired reserve ratiorepublic of uzbekistanrepublic of tajikistanreligious orientationreconnaissance by firereagan administrationquercus ellipsoidalispyridoxine 5'-phosphatepurse-string operationpublius vergilius maropsychopsis kramerianapsychological sciencepsychic communicationpseudococcus fragilisproportional samplingprivate security forceprimary solid solutionprice-to-earnings ratiopotassium-argon datingpotassium bicarbonateposttraumatic amnesiaposterior labial veinspostal rate commissionpositive-degree adverbpositive magnetic polepopulation commissionpolytechnic institutepolystichum setiferumpolystichum lonchitispolitical correctnesspodocarpus latifoliusplectrophenax nivalispilosella officinarumpiezoelectric crystalphysiological anatomyphlebotomus papatasiiphilip warren andersonphilip dormer stanhopephalaropus fulicariusphalaenopsis amabilispersonal line of creditperitonsillar abscessperisoreus canadensispercussion instrumentpenstemon linarioidespenicillin v potassiumpassiflora mollissimapassiflora maliformispassiflora laurifoliaparietomastoid sutureortilis vetula macalliorthopedic foot insoleorthogonal oppositionorganic brain syndromeorder torpediniformesorder of saint benedictorder cycadofilicalesorder charadriiformesorder aristolochialesonobrychis viciifoliaoceanic whitetip sharkobject of a prepositionnurse-patient relationnotropis atherinoidesnorthwest territoriesnorth island edelweissnonviolent resistancenonrestrictive clauseniels henrik david bohrneurological disordernephrolepis pectinatanegotiable instrumentnecrotizing enteritisnecrobiosis lipoidicanarthecium ossifragumnaphthalene poisoningmyrmecobius fasciatusmyeloblastic leukemiamusical accompanimentmumification necrosismountain standard timemountain lady's slippermortise-and-tenon jointmonoblastic leukaemiamirabilis californicamildred ella didriksonmicrosorium punctatummicropterus salmoidesmeriones unguiculatusmenyanthes trifoliatamelilotus officinalismegaloblastic anaemiamaximilian's sunflowermasticophis lateralismaidenhair spleenwortmagnesium bicarbonatemacrotus californicusmacroclemys temminckilysichiton americanumlyrurus mlokosiewiczilouis victor de broglielouis eugene felix neellonicera sempervirenslofortyx californicuslipoid granulomatosisligustrum ovalifoliumleptotyphlops humilislepidochelys olivacealeonotis nepetaefolialavandula officinaliskosteletzya virginicakingdom of saudi arabiakinetic theory of gasesketosis-prone diabeteskaspar friedrich wolffjournalist's privilegejoseph rudyard kiplingisovolumetric processisidor feinstein stoneintravenous injectionintransitive verb forminternational affairsinhalation anestheticinhalation anesthesiainferior rectus muscleindustrial revolutionindustrial psychologyinconvenience oneselfincentive stock optionimmediate constituenthyperkinetic syndromehylophylax naevioideshydrofluosilicic acidhydnocarpus wightianahyacinthus orientalishorizontal stabilizerhorizontal stabiliserhistiocytic leukaemiahippodamia convergenshimantopus himantopushibiscus rosa-sinensishexalectris warnockiihelleborus orientalishelladic civilisationhelianthus petiolarisheat of solidificationharpullia cupanioideshalicoeres bivittatusgypsophila paniculatagutierrezia sarothraegriselinia littoralisgregory goodwin pincusgnaeus julius agricolagiovanni schiaparelligiovanni battista cibogeranium richardsoniigeorge william russellgeometric progressiongenus hippoglossoidesgenus aspidophoroidesgaussian distributiongalvanic skin responsegaius cassius longinusfriedrich anton mesmerfrederick moore vinsonform genus rhizoctiniaflindersia schottianafirst council of nicaeafinancial institutionfield press censorshipfibrous-rooted begoniafeast of the dedicationfamily titanosauridaefamily strophariaceaefamily stercorariidaefamily scyliorhinidaefamily scombresocidaefamily psilophytaceaefamily phyllostomidaefamily peripatopsidaefamily ostraciontidaefamily osteoglossidaefamily opisthocomidaefamily odontaspididaefamily megalosauridaefamily lophosoriaceaefamily hipposideridaefamily edaphosauridaefamily discoglossidaefamily belostomatidaefamily ambystomatidaeeuphorbia helioscopiaeuphorbia cyparissiaseucalyptus citriodoraeucalypt tereticorniseschrichtius robustuseschrichtius gibbosuserythronium dens-caniserythrina vespertilioerigonum fasciculatumeragrostic abyssinicaepipactis helleborineenvironmental scienceenteric-coated aspirinenglish cocker spanielendamoeba histolyticaempiricist philosophyelectrostatic printerelectrostatic machineelectronic transistorelectronic instrumentedith giovanna gassioneconomic mobilisationechinochloa crusgalliechinocactus grusoniidryopteris oreopterisdryopteris marginalisdoubly transitive verbdomestic silkworm mothdolichonyx oryzivorusdoctoral dissertationdivision pteridophytadivision euglenophytadivision dicynodontiadissociative disorderdissociation constantdisassortative matingdirect supporting firediplotaxis tenuifoliadionysius i of syracusedicrostonyx hudsoniusdichloroethyl sulfidedesmanthus ilinoensisdemetrius poliorcetesdefensive attribitiondavid alfaro siqueirosdante gabriel rossettidalbergia stevensoniicystopteris bulbiferacypripedium calceoluscyperus alternifoliuscycladic civilisationcyamopsis psoraloidesctenocephalides feliscrotalaria sagitalliscriminal conversationcoumarone-indene resincorydalis claviculatacortinarius mutabiliscorpuscular radiationconstructive evictionconstruction industryconstantine i of greececonservation of parityconduction anesthesiacompact disc write-oncecommon carline thistlecolour television tubecolorimetric analysiscodariocalyx motoriusclostridium botulinumclose-quarter fightingclopidogrel bisulfateclintonia andrewsianaclinical psychologistclassical haemophiliaclandestine operationcitrophilous mealybugcistothorus platensiscistothorus palustrischrysophyllum cainitochloroxylon swieteniachionochloa conspicuachilomeniscus cinctuscervical disc syndromecertificate of depositcentaurium scilloidescaspar friedrich wolffcarya myristiciformiscarolina spring beautycardiac resuscitationcampanula aparinoidescalostoma cinnabarinacalochortus nuttalliicalifornia false morelcalculus of variationsbrush-tailed porcupinebrassaia actinophyllaboykinia occidentalisbosnia and herzegovinablastodermic vessiclebiscayne national parkbiochemical mechanismbinomial distributionbaccharis halimifoliaavicennia officinalisaversive conditioningatlantic spiny dogfishasplenium trichomanesasparagus officinalesasarum shuttleworthiiarteria intercostalisartemisia ludovicianaartemisia gnaphalodesartaxerxes ii of persiaariocarpus fissuratusardisia escallonoidesarctic ground squirrelarceuthobium pusillumaposematic colorationapodictic propositionantonius stradivariusantitrust legislationandropogon virginicusambrosia psilostachyaairborne transmissionafrican bowstring hempaffine transformationacacia auriculiformis