12-Letter Words Matching ____S____O__

There are 45 12-letter words that match ____S____O__. 24 are common words, such as ATTESTATIONS and BREASTSTROKE. A rarer one is UNFASTIDIOUS. In this set, S is the most frequent open letter (41 words). 7 words contain a doubled letter.

Full list 45

Common words

attestationsbreaststrokecoruscationsdetestationsdevastationsforestationsillustratorsinauspiciousinfestationslegislationsliposuctionsmolestations
attestationsbreaststrokecoruscationsdetestationsdevastationsforestationsillustratorsinauspiciousinfestationslegislationsliposuctionsmolestationsobfuscationsreassertionsreinsertionssalespersonssatisfactoryspinsterhoodthousandfoldtransactionstransfusionstranslationsvivisectionsworkstationsgamosepaloushemispheroidmonosepalousmonospermousparasitologypolysepaloustranspicuousunsuspiciousvenesectionschrismationscryosurgeonsdecussationsdegustationsendosymbiontgangsterdomsgreaseproofspolystichousrepossessorstransectionstransfixionsunfastidious

About this list

Words
45 (24 common words)
Common example
attestations
Rare example
unfastidious
Doubled letters
7
Ending in S
38
Most frequent letter
S (41)

Questions

How many 12-letter words matching ____s____o__ are there?

45. 24 of them are common words.

What is a common example?

ATTESTATIONS is among the common words in this set.