15-Letter Words Matching ______O__A_____

There are 42 15-letter words that match ______O__A_____. 10 are common words, such as AUTOBIOGRAPHERS and AUTOBIOGRAPHIES. A rarer one is ULTRAMONTANISMS. In this set, I is the most frequent open letter (39 words). 11 words contain a doubled letter.

Full list 42

Common words

autobiographersautobiographiesdisassociationsdisinformationsmisinformationsneocolonialismsneocolonialistsrephotographingtransformationstransportationscaprifoliaceouselectroanalysis
autobiographersautobiographiesdisassociationsdisinformationsmisinformationsneocolonialismsneocolonialistsrephotographingtransformationstransportationscaprifoliaceouselectroanalysiselectrodialysishistocompatibleopisthognathousthromboplastinsarteriographiesblaxploitationschondrocraniumsdictatorialnesselectroanalyseselectrodialyseselectrodialyticintercomparisonmedulloblastomametallographersmetallographiesnonimportationsnoninformationsoscillographiesoverprogrammingpantisocraticalpantisocratistsphthalocyaninesplatinocyanidesprosopographiesspectrographiesterritorialismsterritorialiststerritorializedterritorializesultramontanisms

About this list

Words
42 (10 common words)
Common example
autobiographers
Rare example
ultramontanisms
Doubled letters
11
Ending in S
34
Most frequent letter
I (39)

Questions

How many 15-letter words matching ______o__a_____ are there?

42. 10 of them are common words.

What is a common example?

AUTOBIOGRAPHERS is among the common words in this set.