15-Letter Words Matching S_____A________

There are 31 15-letter words that match S_____A________. 6 are common words, such as SEGREGATIONISTS and SEMITRANSPARENT. A rarer one is SURVIVABILITIES. In this set, T is the most frequent open letter (29 words). 6 words contain a doubled letter.

Full list 31

Common words

segregationistssemitransparentsteadfastnessessupersaturatingsupersaturationsystematizationsingularizationsoftheartednesssoutheastwardlysubstratospheresuburbanizationsuperlativeness
segregationistssemitransparentsteadfastnessessupersaturatingsupersaturationsystematizationsingularizationsoftheartednesssoutheastwardlysubstratospheresuburbanizationsuperlativenesssupernaturalismsupernaturalistsuperpatriotismsycophanticallysacrosanctitiessecondarinessessemitranslucentsinterabilitiessolderabilitiesspinthariscopesspreadabilitiessqueezabilitiessubmetacentricssuborganizationsubvocalizationsupercalenderedsupermajoritiessuperparasitismsurvivabilities

About this list

Words
31 (6 common words)
Common example
segregationists
Rare example
survivabilities
Doubled letters
6
Ending in S
14
Most frequent letter
T (29)

Questions

How many 15-letter words matching s_____a________ are there?

31. 6 of them are common words.

What is a common example?

SEGREGATIONISTS is among the common words in this set.