12-Letter Words Matching A_O_________

There are 54 12-letter words that match A_O_________. 19 are common words, such as ABOLITIONISM and ABOLITIONIST. A rarer one is AZOTOBACTERS. In this set, I is the most frequent open letter (46 words). 12 words contain a doubled letter.

Full list 54

Common words

abolitionismabolitionistabominationsabortionistsacousticallyadolescencesadorablenessaforethoughtagoraphobiasagoraphobicsamontilladosamortization
abolitionismabolitionistabominationsabortionistsacousticallyadolescencesadorablenessaforethoughtagoraphobiasagoraphobicsamontilladosamortizationapocryphallyapoliticallyapostatizingapostleshipsapothecariesaromatherapyaromaticallyabolishmentsaboriginallyacousticiansamortizementamoxicillinsapochromaticapocynaceousapologeticalapomorphinesapostrophizeapothegmaticapotheosizedapotheosizesatomizationsabolitionaryabortivenessadolescentlyadoptabilityadoptianismsadoptionismsadoptionistsamobarbitalsamoxycillinsanodizationsanorexigenicanorthositesanorthositicapocalyptismapocalyptistapophyllitesapostatisingapostolicityapostrophiseazoospermiasazotobacters

About this list

Words
54 (19 common words)
Common example
abolitionism
Rare example
azotobacters
Doubled letters
12
Ending in S
27
Most frequent letter
I (46)

Questions

How many 12-letter words matching a_o_________ are there?

54. 19 of them are common words.

What is a common example?

ABOLITIONISM is among the common words in this set.