15-Letter Words Matching ________O______

There are 254 15-letter words that match ________O______. 64 are common words, such as ACRIMONIOUSNESS and ADVENTUROUSNESS. A rarer one is XERORADIOGRAPHY. In this set, I is the most frequent open letter (211 words). 96 words contain a doubled letter.

Full list 254

Common words

acrimoniousnessadventurousnessambassadorshipsbiotechnologiescarnivorousnessceremoniousnesschancellorshipscompassionatelyconcessionairesconfectioneriesconspicuousnesscontentiousness
acrimoniousnessadventurousnessambassadorshipsbiotechnologiescarnivorousnessceremoniousnesschancellorshipscompassionatelyconcessionairesconfectioneriesconspicuousnesscontentiousnessconventionalityconventionalizedaguerreotypingdispassionatelyendocrinologiesendocrinologistexpeditiousnessexpressionisticflirtatiousnesshallucinogenicsharpsichordistshypothyroidismsillustriousnessimpecuniousnessimpressionisticincongruousnessindustriousnessinjudiciousnessinterscholasticmellifluousnessmeritoriousnessmischievousnessophthalmologiesophthalmologistpostconsonantalpretentiousnessprofessionalismprofessionalizeproportionalityproportionatelyproprietorshipspunctiliousnessquarrelsomenessreincorporatingreincorporationrepetitiousnessrevolutionariesrevolutionisingrevolutionizingsuperfluousnesssuperimpositiontelephotographytempestuousnesstendentiousnesstransistorizingtreacherousnessunaccommodatingunconsciousnessunquestioninglyunrighteousnessunwholesomenessventuresomenesscrystallographyancylostomiasisankylostomiasisantinationalistautolithographyautoradiographsbiotechnologistcommissionairescompendiousnesscontortionisticconventionalismconventionalistcounterpointingdeleteriousnessdemythologizingduplicitousnessefficaciousnesselectropositiveencephalographyexhibitionisticgeochronologistgeomorphologieshermaphroditismhexylresorcinolhomogeneousnessignominiousnessimmunoglobulinsincredulousnessinquisitoriallyinstructorshipsinterferometersinterferometricirreligiousnessknickerbockeredmagnanimousnessmorphophonemicsnitrochloroformnondevelopmentsodoriferousnessophthalmoscopesorganophosphateperfectionisticperfunctorinessperspicuousnesspestiferousnessphototopographyphototypographyprecipitousnesspromiscuousnessproprietoriallypsychobiologistresynchronizingrumbustiousnessschistosomiasesschistosomiasissententiousnessstereoisomerismsubstratospheretelephotographstrypanosomiasisultrasonographyweatherboardingadenohypophysesadenohypophysisancylostomiasesanfractuositiesankylostomiasesantiaphrodisiacantiferromagnetantipornographyantirationalismantirationalistantirationalityatrabiliousnessautochthonouslyautoradiographyblasphemousnesschemoautotrophychemotaxonomieschemotaxonomistcholangiographychronobiologieschronobiologistcombinatoriallycompassionatingconfectionariesconfessionalismconfessionalistcouncillorshipscountermovementcryptozoologiescryptozoologistcytophotometricdaguerreotypiesdaguerreotypistdemythologizersdephosphorylatedeuteranomaliesdeuteranomalousdiastereoisomerdichotomousnessdiffractometersdiffractometricecophysiologiesenantiomorphismenantiomorphousencephalographsencephalopathicepichlorohydrinepitheliomatousepizootiologieserythropoietinsfissiparousnessfloriferousnessgeochronologiesgeomorphologisthelminthologieshyperinvolutionhypervelocitiesimmunoblottingsimpecuniositiesinterparoxysmalintervalometerslegislatorshipsmegacorporationmegasporophyllsmicrobarographsmicroporositiesmountainousnessnecessitousnessnephrectomizingneurohypophysesneurohypophysisnincompooperiesnonantagonisticnonaristocraticnoncontrollablenonstationariesophthalmoscopicopprobriousnessoverdiscountingoverelaboratingoverelaborationoverglamorizingoverproportionsoverzealousnessphenomenologiesphenomenologistphotoautotrophsplethysmographsplethysmographypredevelopmentsprestigiousnessproportionatingprosthodontistspseudoscorpionspsychoacousticspsychobiographypsychobiologiesradioautographsradioautographyradiostrontiumsremythologizingrevolutionarilyrevolutionizersroentgenographyroentgenologiesroentgenologistsaponaceousnessscintillometerssedimentologiessedimentologistsemipornographysplenectomizingspontaneousnesssporangiophoresstrongyloidosesstrongyloidosissubcategorizingsubdevelopmentssuperabsorbentssupermajoritiessynchronousnesstemerariousnesstransistorisingtroublesomenesstrypanosomiasesultrademocraticunmelodiousnessxeroradiography

About this list

Words
254 (64 common words)
Common example
acrimoniousness
Rare example
xeroradiography
Doubled letters
96
Ending in S
145
Most frequent letter
I (211)

Questions

How many 15-letter words matching ________o______ are there?

254. 64 of them are common words.

What is a common example?

ACRIMONIOUSNESS is among the common words in this set.