13-Letter Words Matching _A__O________

There are 106 13-letter words that match _A__O________. 36 are common words, such as CALLOUSNESSES and CARBOHYDRATES. A rarer one is VARIOUSNESSES. In this set, I is the most frequent open letter (88 words). 19 words contain a doubled letter.

Full list 106

Common words

callousnessescarbohydratescarboniferouscartographerscartographiescatholicitiesfactorizationfatuousnesseshaemorrhaginghagiographershagiographiesharmonization
callousnessescarbohydratescarboniferouscartographerscartographiescatholicitiesfactorizationfatuousnesseshaemorrhaginghagiographershagiographiesharmonizationmalformationsmammographiesnarcotizationnationalisticnationalitiesnationalizingpaleographerspaleographiespatronizinglyradioactivelyradioactivityradiographersradiographiesradioisotopesrandomizationratiocinatingratiocinationrationalisticrationalitiesrationalizingraucousnessessarcophagusesvacuousnesseswarmongeringsbamboozlementcarbonizationcarboxylatingcatholicizingharbormasterslactobacilluslandownershipmacrocephalicmacroeconomicmacromoleculemacroscopicalmagnoliaceousmastoidectomymastoiditidesnarcoanalysispaleobotaniespaleontologicpathogenicitypathoneurosispatronizationradioactivateradiochemicalradiogalaxiesradiolocationradiotelegramratiocinativeratiocinatorssacrosanctitysalmonberriessalmonellosessalmonellosistautologouslycannonballingcarbohydrasescarbonylationcarboxylationdaunorubicinsgallowglassesgaseousnesseslactoglobulinmacroglobulinmacronutrientmastoiditisesnannoplanktonnarrowcastingnationalisingnationalizerspaedomorphismpaleobiologicpaleobotanistpaleoecologicpaleomagneticpantothenatesparfocalitiesparfocalizingpathognomonicradiobiologicradiochemistsradioelementsradiographingradioisotopicradiolabelingradiolabelledradionuclidesradiothoriumsrationalisingrationalizerssaprogenicityvalpolicellasvariousnesses

About this list

Words
106 (36 common words)
Common example
callousnesses
Rare example
variousnesses
Doubled letters
19
Ending in S
49
Most frequent letter
I (88)

Questions

How many 13-letter words matching _a__o________ are there?

106. 36 of them are common words.

What is a common example?

CALLOUSNESSES is among the common words in this set.