15-Letter Words Matching ______A_____S__

There are 55 15-letter words that match ______A_____S__. 17 are common words, such as ANTIQUARIANISMS and ARBITRARINESSES. A rarer one is WITHDRAWNNESSES. In this set, S is the most frequent open letter (54 words). 40 words contain a doubled letter.

Full list 55

Common words

antiquarianismsarbitrarinessescolorfastnessesdesperatenessesegalitarianismselaboratenesseshaphazardnessesimmediatenessesinanimatenessesmomentarinessespaterfamiliasespusillanimously
antiquarianismsarbitrarinessescolorfastnessesdesperatenessesegalitarianismselaboratenesseshaphazardnessesimmediatenessesinanimatenessesmomentarinessespaterfamiliasespusillanimouslysegregationistssteadfastnessestemperatenessestemporarinessesutilitarianismsassociationismsdisparatenessesferromagnetismsincessantnesseslibertarianismsmillenarianismsuncertainnessesadversarinessesaggregatenessesassociationistsconjugatenessescooperationistscustomarinessesexemplarinessesferrimagnetismsferromanganesesfortunatenessesimaginarinessesinsatiatenessesintegrationistsintricatenessesinviolatenesseslightfastnessesmaterfamiliasesmercenarinessesmultiracialismsobstinatenessespaleomagnetismspaleomagnetistsproletarianisedproletarianisesproximatenessesrepudiationistsreservationistssecondarinessesvisionarinessesvoluntarinesseswithdrawnnesses

About this list

Words
55 (17 common words)
Common example
antiquarianisms
Rare example
withdrawnnesses
Doubled letters
40
Ending in S
53
Most frequent letter
S (54)

Questions

How many 15-letter words matching ______a_____s__ are there?

55. 17 of them are common words.

What is a common example?

ANTIQUARIANISMS is among the common words in this set.