12-Letter Words Matching ___A_____O__

There are 57 12-letter words that match ___A_____O__. 24 are common words, such as ADVANTAGEOUS and BREASTSTROKE. A rarer one is UNFASTIDIOUS. In this set, S is the most frequent open letter (53 words). 5 words contain a doubled letter.

Full list 57

Common words

advantageousbreaststrokedebarkationsdecapitatorsdefalcationsdemarcationsdevaluationsdevastationsembarkationsexpatiationsincantationsincarnations
advantageousbreaststrokedebarkationsdecapitatorsdefalcationsdemarcationsdevaluationsdevastationsembarkationsexpatiationsincantationsincarnationsinfatuationsinharmoniousinsalubriousirradiationsmetamorphoserecantationsretaliationsretardationsrevaluationsstrangleholdtotalisatorstotalizatorsgeraniaceoushematogenouskeratogenousloganiaceousmetagnathousmetallophonemetamorphousmonadelphousparacetamolsparasitologypetaliferousspeakerphonetriadelphousbipartitionscovariationscreaturehooddecantationsdesalinatorsdisaccustomsfurazolidonegreaseproofsimpartationsinvalidatorsmetafictionsnonambiguousparathormonerepartitionsreradiationssteatopygoussubarachnoidsubauditionstitaniferousunfastidious

About this list

Words
57 (24 common words)
Common example
advantageous
Rare example
unfastidious
Doubled letters
5
Ending in S
47
Most frequent letter
S (53)

Questions

How many 12-letter words matching ___a_____o__ are there?

57. 24 of them are common words.

What is a common example?

ADVANTAGEOUS is among the common words in this set.