15-Letter Words Matching S_____O________

There are 26 15-letter words that match S_____O________. 7 are common words, such as SALACIOUSNESSES and STRENUOUSNESSES. A rarer one is SYNCHRONOUSNESS. In this set, E is the most frequent open letter (23 words). 9 words contain a doubled letter.

Full list 26

Common words

salaciousnessesstrenuousnessessumptuousnessessuperconductingsuperconductivesuperconductorssynchronizationschistosomiasesschistosomiasisspectroscopicalstreptothricinssynchronicities
salaciousnessesstrenuousnessessumptuousnessessuperconductingsuperconductivesuperconductorssynchronizationschistosomiasesschistosomiasisspectroscopicalstreptothricinssynchronicitiessynecdochicallysagaciousnessesseditiousnessesspectrographiesspectroscopistsstadtholderatesstadtholdershipstreptobacillussulfurousnessessupercontinentssuperconvenientsupergovernmentsynchronisationsynchronousness

About this list

Words
26 (7 common words)
Common example
salaciousnesses
Rare example
synchronousness
Doubled letters
9
Ending in S
17
Most frequent letter
E (23)

Questions

How many 15-letter words matching s_____o________ are there?

26. 7 of them are common words.

What is a common example?

SALACIOUSNESSES is among the common words in this set.