13-Letter Words Matching ______A_O____

There are 37 13-letter words that match ______A_O____. 8 are common words, such as AMBASSADORIAL and COSIGNATORIES. A rarer one is SUPERMAJORITY. In this set, R is the most frequent open letter (32 words). 3 words contain a doubled letter.

Full list 37

Common words

ambassadorialcosignatoriesforeshadowinggubernatorialobservatoriesovershadowingreformatoriestriceratopsesarchdeaconatecombinatorialdeuteragonistdeuteranopias
ambassadorialcosignatoriesforeshadowinggubernatorialobservatoriesovershadowingreformatoriestriceratopsesarchdeaconatecombinatorialdeuteragonistdeuteranopiasencephalogramexplanatorilylegislatorialnumismatologyoverelaboratepancreatotomysubequatorialsystematologythremmatologychemotaxonomycombinatoricsdeprecatorilydeuteranomalyexpurgatorialforeshadowersinformatorilylollapaloozasmasticatoriesmiscatalogingoverglamorizeoverzealouslypreparatorilyprocuratorialsecretagoguessupermajority

About this list

Words
37 (8 common words)
Common example
ambassadorial
Rare example
supermajority
Doubled letters
3
Ending in S
10
Most frequent letter
R (32)

Questions

How many 13-letter words matching ______a_o____ are there?

37. 8 of them are common words.

What is a common example?

AMBASSADORIAL is among the common words in this set.