15-Letter Words Matching _I________S____

There are 13 15-letter words that match _I________S____. 5 are common words, such as BIPARTISANSHIPS and DISESTABLISHING. A rarer one is RIBONUCLEOSIDES. In this set, S is the most frequent open letter (12 words). 7 words contain a doubled letter.

Full list 13

bipartisanshipsdisestablishingmicroaggressionmicroprocessorsmischievousnessdisembarrassingfideicommissarydiastereoisomerdichotomousnessfissiparousnessmicropublishersmicropublishingribonucleosides

About this list

Words
13 (5 common words)
Common example
bipartisanships
Rare example
ribonucleosides
Doubled letters
7
Ending in S
7
Most frequent letter
S (12)

Questions

How many 15-letter words matching _i________s____ are there?

13. 5 of them are common words.

What is a common example?

BIPARTISANSHIPS is among the common words in this set.