15-Letter Words Matching _____O________S

There are 131 15-letter words that match _____O________S. 24 are common words, such as ACRIMONIOUSNESS and ANTHROPOLOGISTS. A rarer one is UNMELODIOUSNESS. In this set, I is the most frequent open letter (114 words). 40 words contain a doubled letter.

Full list 131

Common words

acrimoniousnessanthropologistsatherosclerosesatherosclerosiscategorizationsceremoniousnessconglomerationsdecolonizationsequivocalnessesgastroenteritisheterogeneitiesmeritoriousness
acrimoniousnessanthropologistsatherosclerosesatherosclerosiscategorizationsceremoniousnessconglomerationsdecolonizationsequivocalnessesgastroenteritisheterogeneitiesmeritoriousnessmonopolizationsnoncooperationsoutspokennessesovercompensatesoverconfidencesoverpopulationsphysiotherapiespreadolescencesprognosticatorspsychotherapiesrecolonizationsteleconferencesancylostomiasisankylostomiasisanthropogenesesanthropogenesisanthropometriesanthropophagouschlorothiazidescontrollershipsfashionablenesshorizontalitiesimmunoglobulinsinhomogeneitiesinopportunenessirrevocablenessmillionairessesmorphophonemicsovercommitmentspassionlessnessphlebosclerosispneumonectomiespsychodiagnosispsycholinguistspsychoneuroticssclerodermatousstandoffishnessaerosolizationsallegoricalnessallegorizationsallelomorphismsancylostomiasesankylostomiasesanthropophagiesanthroposophiesanticonvulsantsanticonvulsivesanticorruptionsantimonarchistsantimonopolistsbibliotherapiesbiogeochemicalschorioallantoischronobiologieschronotherapiesconglomerateurscryptorchidismscryptozoologiesdechlorinationsdecolorizationsdichloroethaneseasygoingnessesechinodermatousemotionlessnessenterocolitisesenterogastronesenvenomizationsepizootiologiesfictionizationsheteromorphismsheterothallismsimmunoblottingsimmunodiagnosesimmunodiagnosisimmunotherapiesinteroperativesirreconcilableslymphocytosisesmissionizationsnonprogressivesnucleosynthesesnucleosynthesisomnicompetencesopenmouthednessopinionatednessorganochlorinesorganometallicsovercompliancesovercomplicatesovercorrectionsoverhomogenizesparadoxicalnessparajournalismsparanormalitiespararosanilinesphotooxidationspseudomorphismspseudoscorpionspsychoacousticspsychobiologiespsychochemicalspsychohistoriespsychosurgeriespsychosynthesespsychosynthesisretinoblastomasrevalorizationssclerotizationsseroconversionsstratovolcanoessubproletariatssuperovulationsthermojunctionsthermoreceptorsthermoregulatestrichomonacidesultimogenituresunfavorablenessunmelodiousness

About this list

Words
131 (24 common words)
Common example
acrimoniousness
Rare example
unmelodiousness
Doubled letters
40
Ending in S
131
Most frequent letter
I (114)

Questions

How many 15-letter words matching _____o________s are there?

131. 24 of them are common words.

What is a common example?

ACRIMONIOUSNESS is among the common words in this set.