13-Letter Words Matching I_____S______

There are 18 13-letter words that match I_____S______. 8 are common words, such as IMPIOUSNESSES and IMPRESSIONISM. A rarer one is INTRANSIGEANT. In this set, N is the most frequent open letter (17 words). 6 words contain a doubled letter.

Full list 18

impiousnessesimpressionismimpressionistinterestinglyintransigenceintransigentsintransitivesintrinsicallyinterosculateintransigencyintumescencesimmunosorbentimperishablesincalescencesindehiscencesindigestiblesinspissationsintransigeant

About this list

Words
18 (8 common words)
Common example
impiousnesses
Rare example
intransigeant
Doubled letters
6
Ending in S
9
Most frequent letter
N (17)

Questions

How many 13-letter words matching i_____s______ are there?

18. 8 of them are common words.

What is a common example?

IMPIOUSNESSES is among the common words in this set.