12-Letter Words Matching S_I_________

There are 79 12-letter words that match S_I_________. 34 are common words, such as SAILBOARDERS and SAILBOARDING. A rarer one is SWITCHBACKED. 35 words contain a doubled letter.

Full list 79

Common words

sailboarderssailboardingscintillatedscintillatesseismographsseismographyseismologiesseismologistshiftinessesshipbuildersshipbuildingshipwrecking
sailboarderssailboardingscintillatedscintillatesseismographsseismographyseismologiesseismologistshiftinessesshipbuildersshipbuildingshipwreckingshirtsleevesskillfulnessskimpinessesskinninessesskittishnessslightnessesslipperinessspinsterhoodspiritualismspiritualistspiritualityspitefullestspitefulnessstickinessessticklebacksstigmatizingstimulationsstinginessesstipulationssuitablenessswitchbladesswitchboardsscintillatorseignioragesseismometersshimmeringlyslipperwortssmilacaceoussnickeringlysniggeringlyspiceberriesspiegeleisenspiritualizestichomythiastigmasterolstilbestrolsswingletreessailboatingsscintigraphyscissortailsseismicitiesseismometricshinplastersshirtdressesshirtsleevedshittimwoodsskillessnessslickensidesslinkinessesslipstreamedsmithsonitessnickersneessniffinessessniffishnesssniperscopesspiculationsspiffinessesspinnerettesspiritednessspiritlesslyspirochaetesspirometriesstichomythicstickhandledstickhandlerstickhandlesswitchbacked

About this list

Words
79 (34 common words)
Common example
sailboarders
Rare example
switchbacked
Doubled letters
35
Ending in S
50

Questions

How many 12-letter words matching s_i_________ are there?

79. 34 of them are common words.

What is a common example?

SAILBOARDERS is among the common words in this set.