13-Letter Words Matching S____O_______

There are 74 13-letter words that match S____O_______. 20 are common words, such as SAILBOARDINGS and SCHIZOPHRENIA. A rarer one is SYNECOLOGICAL. In this set, I is the most frequent open letter (60 words). 7 words contain a doubled letter.

Full list 74

Common words

sailboardingsschizophreniaschizophrenicsectionalismsseismographerseismographicseismologicalseismologistsselenographersemiconductorsemiconscioussemimonthlies
sailboardingsschizophreniaschizophrenicsectionalismsseismographerseismographicseismologicalseismologistsselenographersemiconductorsemiconscioussemimonthliesshallownessessnowboardingssoliloquizingspasmodicallyspeleologistsstereotypicalstratospheresstratosphericschizogenesisschizothymiasscleroproteinsemipoliticalsemiporcelainserologicallysomatosensoryspeleologicalspheroidicitystationmasterstercoraceousstereographicstereoscopiesstereotropismstratocumulussuperordinatesurfboardingssymbioticallysymphonicallyschizophrenessclerodermataseismometriesselenocentricselenologicalselenologistssemitonicallysexploitationsnowmobilingssnowmobilistssoliloquisingsoliloquizerssomatologicalsomatopleuressomatostatinssomatotrophinsomatotropinsstandoffishlystereographedstereoisomersstereologicalstereophoniesstereopticonsstereoregularstichomythiasstichomythiesstratocraciesstratovolcanosubadolescentsuperorganismsuperovulatedsuperovulatessurgeonfishessymphoniouslysynecological

About this list

Words
74 (20 common words)
Common example
sailboardings
Rare example
synecological
Doubled letters
7
Ending in S
32
Most frequent letter
I (60)

Questions

How many 13-letter words matching s____o_______ are there?

74. 20 of them are common words.

What is a common example?

SAILBOARDINGS is among the common words in this set.