15-Letter Words With O
There are 2,340 fifteen-letter words containing O in our dictionary; 466 of them are common words.
Type your own letters to find only the 15-letter words you can make, or leave it empty to open this list in the word finder.
The 600 most common of 2,340 words
- straightforward26 points
- experimentation26 points
- extraordinarily26 points
- generalizations25 points
- confidentiality24 points
- inconveniencing23 points
- notwithstanding23 points
- recommendations22 points
- implementations21 points
- inconsistencies19 points
- congratulations18 points
- interpretations17 points
- representations17 points
- commercializing33 points
- synchronization32 points
- excommunicating31 points
- psychologically31 points
- comprehensively30 points
- excommunication30 points
- psychotherapies30 points
- crystallization29 points
- hospitalization29 points
- phosphorescence29 points
- accomplishments28 points
- acknowledgement28 points
- acknowledgments28 points
- heterosexuality28 points
- revolutionizing28 points
- specializations28 points
- chronologically26 points
- incompatibility26 points
- inconsequential26 points
- ophthalmologist26 points
- standardization26 points
- technologically26 points
- philanthropists25 points
- phototypesetter25 points
- retrospectively25 points
- authoritatively24 points
- correspondingly24 points
- counterattacked24 points
- misapprehension24 points
- misappropriated24 points
- rationalization24 points
- anthropological23 points
- autobiographies23 points
- environmentally23 points
- improbabilities23 points
- misappropriates23 points
- unsophisticated23 points
- classifications22 points
- correspondences22 points
- counterbalanced22 points
- differentiation22 points
- disappointments22 points
- electromagnetic22 points
- multiprocessing22 points
- personification22 points
- proportionality22 points
- anthropologists21 points
- counterbalances21 points
- disadvantageous21 points
- discouragements21 points
- dispassionately21 points
- dissatisfaction21 points
- impossibilities21 points
- multiplications21 points
- unconditionally21 points
- predispositions20 points
- procrastinating20 points
- resourcefulness20 points
- transformations20 points
- uncontroversial20 points
- consciousnesses19 points
- procrastination19 points
- reconciliations19 points
- reconnaissances19 points
- reconstructions19 points
- administrations18 points
- disillusionment18 points
- instantaneously18 points
- insubordination18 points
- internationally18 points
- paleontologists18 points
- revolutionaries18 points
- unintentionally18 points
- constitutionals17 points
- pretentiousness17 points
- totalitarianism17 points
- transliteration15 points
- psychoanalyzing38 points
- philosophically30 points
- psychotherapist30 points
- oversimplifying29 points
- disorganization26 points
- cinematographer25 points
- overcompensated25 points
- pharmacologists25 points
- reorganizations25 points
- competitiveness24 points
- disappointingly24 points
- diversification24 points
- inconspicuously24 points
- nationalization24 points
- overcompensates24 points
- simplifications24 points
- hallucinogenics23 points
- microprocessors23 points
- unsportsmanlike23 points
- conscientiously22 points
- professionalism22 points
- slaughterhouses22 points
- thoughtlessness22 points
- impressionistic21 points
- miscalculations21 points
- preconditioning21 points
- presuppositions21 points
- troubleshooting21 points
- conservationist20 points
- interconnecting20 points
- troubleshooters20 points
- unconsciousness19 points
- discontinuation18 points
- nonintervention18 points
- preregistration18 points
- traditionalists16 points
- overemphasizing35 points
- overspecialized32 points
- conceptualizing31 points
- exemplification31 points
- overspecializes31 points
- typographically31 points
- acclimatization30 points
- computerization30 points
- anthropomorphic29 points
- crystallography29 points
- democratization29 points
- demographically29 points
- familiarization29 points
- photojournalism29 points
- counterexamples28 points
- demagnetization28 points
- microscopically28 points
- physiotherapist28 points
- unexceptionable28 points
- unobjectionable28 points
- unquestioningly28 points
- atmospherically27 points
- bibliographical27 points
- categorizations27 points
- photojournalist27 points
- servomechanisms27 points
- weatherproofing27 points
- aerodynamically26 points
- liberalizations26 points
- materialization26 points
- miniaturization26 points
- problematically26 points
- uncommunicative26 points
- uncomplimentary26 points
- uncomprehending26 points
- ambassadorships25 points
- astrophysicists25 points
- cardiopulmonary25 points
- circumscription25 points
- condescendingly25 points
- desensitization25 points
- discombobulated25 points
- electrodynamics25 points
- mischievousness25 points
- syllabification25 points
- anthropocentric24 points
- compassionately24 points
- computationally24 points
- demonstratively24 points
- discombobulates24 points
- inappropriately24 points
- plainclothesman24 points
- plainclothesmen24 points
- wrongheadedness24 points
- circumlocutions23 points
- controversially23 points
- conventionality23 points
- daguerreotyping23 points
- decommissioning23 points
- incorrigibility23 points
- indemnification23 points
- neoconservative23 points
- phantasmagorias23 points
- teleconferenced23 points
- bacteriological22 points
- confectioneries22 points
- counterclaiming22 points
- electrification22 points
- interscholastic22 points
- microbiologists22 points
- obstructiveness22 points
- plenipotentiary22 points
- prohibitionists22 points
- proportionately22 points
- sanctimoniously22 points
- superconductors22 points
- teleconferences22 points
- unceremoniously22 points
- appropriateness21 points
- contemporaneous21 points
- decontaminating21 points
- discountenanced21 points
- impecuniousness21 points
- inconsiderately21 points
- misconstruction21 points
- nongovernmental21 points
- nonprescription21 points
- parthenogenesis21 points
- polyunsaturated21 points
- prognosticating21 points
- radiotelephones21 points
- radiotherapists21 points
- reapportionment21 points
- reconfiguration21 points
- trustworthiness21 points
- undemonstrative21 points
- unpronounceable21 points
- atherosclerosis20 points
- authentications20 points
- bacteriologists20 points
- confrontational20 points
- conglomerations20 points
- deconstructions20 points
- decontamination20 points
- discontinuances20 points
- discountenances20 points
- horticulturists20 points
- intensification20 points
- noninterference20 points
- nonprofessional20 points
- nontransferable20 points
- prognostication20 points
- prognosticators20 points
- superstitiously20 points
- surreptitiously20 points
- unreconstructed20 points
- concessionaires19 points
- interconnection19 points
- obstructionists19 points
- procrastinators19 points
- recapitulations19 points
- tempestuousness19 points
- tonsillectomies19 points
- transfiguration19 points
- discontinuities18 points
- intercollegiate18 points
- reconsideration18 points
- tyrannosauruses18 points
- instrumentation17 points
- insurrectionist17 points
- segregationists17 points
- substantiations17 points
- transplantation17 points
- industriousness16 points
- interrogatories16 points
- tendentiousness16 points
- sensationalists15 points
- extemporization35 points
- contextualizing34 points
- psychopathology34 points
- externalization31 points
- objectification31 points
- consequentially29 points
- physiologically29 points
- professionalize29 points
- systematization29 points
- depersonalizing28 points
- hypnotherapists28 points
- topographically28 points
- contemplatively27 points
- destabilization27 points
- marginalization27 points
- pharmacological27 points
- demystification26 points
- denationalizing26 points
- collaboratively25 points
- introspectively25 points
- oversubscribing25 points
- sadomasochistic25 points
- sensationalized25 points
- transistorizing25 points
- transmogrifying25 points
- uncomplainingly25 points
- weatherboarding25 points
- disconcertingly24 points
- incomprehension24 points
- internalization24 points
- microbiological24 points
- sensationalizes24 points
- demonstrability23 points
- distributorship23 points
- epidemiological23 points
- gastronomically23 points
- microelectronic23 points
- misapplications23 points
- vivisectionists23 points
- aromatherapists22 points
- pusillanimously22 points
- commissionaires21 points
- conspicuousness21 points
- desertification21 points
- dessertspoonful21 points
- epidemiologists21 points
- identifications21 points
- indissolubility21 points
- reafforestation21 points
- supplementation21 points
- counterargument20 points
- counterpointing20 points
- interventionism20 points
- preservationist20 points
- superfluousness20 points
- trigonometrical20 points
- unprepossessing20 points
- countercultures19 points
- countermeasures19 points
- punctiliousness19 points
- purposelessness19 points
- educationalists18 points
- flirtatiousness18 points
- interventionist18 points
- underestimation18 points
- contentiousness17 points
- millionairesses17 points
- gastroenteritis16 points
- photosynthesize35 points
- cholecystectomy32 points
- hyperthyroidism32 points
- lexicographical32 points
- overcapitalized32 points
- pharmacotherapy32 points
- alphabetization31 points
- overcapitalizes31 points
- unexceptionably31 points
- bowdlerizations30 points
- conventionalize29 points
- overgeneralized29 points
- quadruplication29 points
- symptomatically29 points
- telephotography29 points
- accommodatingly28 points
- cannibalization28 points
- communicability28 points
- overgeneralizes28 points
- phosphorylation28 points
- bastardizations27 points
- cinematographic27 points
- commodification27 points
- masochistically27 points
- rephotographing27 points
- developmentally26 points
- expressionistic26 points
- harpsichordists26 points
- majoritarianism26 points
- perspicaciously26 points
- quarrelsomeness26 points
- blameworthiness25 points
- carcinogenicity25 points
- dehydrogenating25 points
- expeditiousness25 points
- immunodeficient25 points
- injudiciousness25 points
- noninflammatory25 points
- nonintoxicating25 points
- photoengravings25 points
- prehistorically25 points
- provocativeness25 points
- radiotelegraphy25 points
- superconductive25 points
- unaccommodating25 points
- underemployment25 points
- cerebrovascular24 points
- comfortableness24 points
- contemporaneity24 points
- historiographer24 points
- inoffensiveness24 points
- micromanagement24 points
- autobiographers23 points
- bidirectionally23 points
- cosmopolitanism23 points
- downheartedness23 points
- foresightedness23 points
- informativeness23 points
- musculoskeletal23 points
- nonavailability23 points
- pulchritudinous23 points
- superconducting23 points
- atherosclerotic22 points
- cooperativeness22 points
- epistemological22 points
- heterogeneously22 points
- immunoglobulins22 points
- improvisational22 points
- interrogatively22 points
- miscellaneously22 points
- nonconstructive22 points
- noncontributory22 points
- preadolescences22 points
- prepositionally22 points
- radiotelegraphs22 points
- recommissioning22 points
- reconfirmations22 points
- schistosomiasis22 points
- subprofessional22 points
- contraindicated21 points
- denitrification21 points
- discontinuously21 points
- micrometeorites21 points
- multiprocessors21 points
- noninflationary21 points
- nonoccupational21 points
- nonparticipants21 points
- overstimulating21 points
- progressiveness21 points
- superimposition21 points
- underproduction21 points
- carnivorousness20 points
- confraternities20 points
- congresspersons20 points
- contraindicates20 points
- countermelodies20 points
- disproportional20 points
- functionalities20 points
- mellifluousness20 points
- nondepartmental20 points
- recontaminating20 points
- reincorporating20 points
- treacherousness20 points
- unobtrusiveness20 points
- unpretentiously20 points
- venturesomeness20 points
- acrimoniousness19 points
- adventurousness19 points
- businesspersons19 points
- ceremoniousness19 points
- constructionist19 points
- counterpetition19 points
- endocrinologist19 points
- oligonucleotide19 points
- postconsonantal19 points
- reincorporation19 points
- unrighteousness19 points
- considerateness18 points
- incongruousness18 points
- inconsideration18 points
- institutionally18 points
- involuntariness18 points
- monounsaturated18 points
- nonbelligerents18 points
- tatterdemalions18 points
- antiabortionist17 points
- meritoriousness17 points
- neocolonialists17 points
- nonintellectual17 points
- remorselessness17 points
- repetitiousness17 points
- supersaturation17 points
- toastmistresses17 points
- illustriousness15 points
- trinitrotoluene15 points
- demythologizing35 points
- hexachlorophene35 points
- azidothymidines34 points
- lymphadenopathy34 points
- physicochemical34 points
- chlorothiazides33 points
- chlorpromazines33 points
- excommunicative33 points
- xerographically33 points
- zoogeographical33 points
- archaeopteryxes32 points
- oxytetracycline32 points
- photochemically32 points
- encephalography31 points
- hypochondriacal31 points
- juxtapositional31 points
- morphophonemics31 points
- orthopsychiatry31 points
- overdramatizing31 points
- physiographical31 points
- psychogenically31 points
- psychotomimetic31 points
- schematizations31 points
- synecdochically31 points
- chromatographic30 points
- dolichocephalic30 points
- gyrostabilizers30 points
- hexylresorcinol30 points
- homeopathically30 points
- hydrodynamicist30 points
- hyperextensions30 points
- microphotograph30 points
- photomicrograph30 points
- photosensitized30 points
- saprophytically30 points
- sycophantically30 points
- thermochemistry30 points
- toxicologically30 points
- apocalyptically29 points
- approachability29 points
- chloramphenicol29 points
- communicatively29 points
- conjunctionally29 points
- counterchecking29 points
- dermatoglyphics29 points
- exhibitionistic29 points
- grandiloquently29 points
- holographically29 points
- hypochondriases29 points
- hypochondriasis29 points
- immunochemistry29 points
- microsporophyll29 points
- monumentalizing29 points
- ophthalmoscopes29 points
- photomechanical29 points
- photosensitizes29 points
- phototelegraphy29 points
- proselytization29 points
- psychometrician29 points
- rhombencephalon29 points
- biogeochemistry28 points
- circularization28 points
- conjugationally28 points
- criminalization28 points
- hermaphroditism28 points
- hydrometallurgy28 points
- macrocosmically28 points
- macroscopically28 points
- microcosmically28 points
- morphologically28 points
- neuropsychiatry28 points
- overachievement28 points
- parametrization28 points
- phenolphthalein28 points
- polysaccharides28 points
- popularizations28 points
- psychobiologist28 points
- sesquicarbonate28 points
- suburbanization28 points
- thermodynamical28 points
- thromboembolism28 points
- acanthocephalan27 points
- cholecalciferol27 points
- depolarizations27 points
- heterochromatic27 points
- horizontalities27 points
- hydrostatically27 points
- hypercorrection27 points
- hypopituitarism27 points
- inquisitorially27 points
- neurophysiology27 points
- overcomplicated27 points
- phenylketonuria27 points
- philanthropical27 points
- phosphocreatine27 points
- phosphoproteins27 points
- photometrically27 points
- pithecanthropus27 points
- programmability27 points
- psychoneurotics27 points
- pyroelectricity27 points
- reauthorization27 points
- trivializations27 points
- unemployability27 points
- algorithmically26 points
- anthropophagous26 points
- archiepiscopate26 points
- autographically26 points
- centrosymmetric26 points
- cholecystitides26 points
- choriocarcinoma26 points
- communistically26 points
- complementarily26 points
- complementarity26 points
- complimentarily26 points
- compressibility26 points
- contemptibility26 points
- cyanocobalamins26 points
- electrochemical26 points
- ethnomusicology26 points
- historiographic26 points
- incommunicative26 points
- incomparability26 points
- infundibuliform26 points
- logarithmically26 points
- nonexperimental26 points
- organophosphate26 points
- overcommitments26 points
- overdevelopment26 points
- overfamiliarity26 points
- personalization26 points
- psycholinguists26 points
- renormalization26 points
- resocialization26 points
Quick facts
- Total words: 2,340
- By usage: 90 very common, 376 common, 1,874 rare
Highest scoring (classic tiles)
- oxyphenbutazone 41
- benzodiazepines 38
- psychoanalyzing 38
- cyclohexylamine 37
- hypnotizability 37
- ventriloquizing 37
- coenzymatically 36
- psychobiography 36
- demythologizing 35
- exoerythrocytic 35
Most common
- straightforward
- experimentation
- extraordinarily
- generalizations
- confidentiality
- inconveniencing
- notwithstanding
- recommendations
- implementations
- inconsistencies
Definitions
- straightforward (adjective)
- Free from ambiguity.
- experimentation (noun)
- The testing of an idea.
- extraordinarily (adverb)
- To a surprising degree.
- confidentiality (noun)
- The state of being secret.
The fifteen-letter words that contain the letter O number 2,340 in our dictionary. About 466 of them are common, which is the group most players will recognise on sight, and the remainder are rarer words that still count in the majority of games. The list is complete, computed from the full word list rather than typed by hand, so you can trust that nothing is missing. The best scorer is OXYPHENBUTAZONE, at 41 points.
How to use this page
Use this list in two ways. Browse it to learn the words that contain the letter O, common ones first, or search it by typing your own letters, with question marks for blanks, to see only the words you can make. Every word shows its classic tile score, and linked words open a page with all their sub-words.
Tips
A balanced rack has roughly three vowels and four consonants, and a lopsided rack is the most common reason players get stuck. If you are drowning in vowels, look for the words on this page with the most vowels and use them to reset. If you have too many consonants, a word with a single vowel will do the same job. When you cannot find a decent play, it is often better to swap tiles or play a short word that dumps the surplus than to force a poor score and keep the bad rack.
Questions
What is the highest-scoring word among the fifteen-letter words containing O?
OXYPHENBUTAZONE scores 41 points with classic tile values, ignoring board multipliers. The full top ten is in the quick facts above; switch the tile set on the search tool if you play with different letter values.
Why are some of these words unfamiliar?
1,874 of the 2,340 words on this page are tagged rare, meaning they fall outside the usual spell-check vocabulary. They are still real words, and many are legal plays, but you should expect a challenge if someone asks you to define them.