12-Letter Words Matching I_____S_____

There are 30 12-letter words that match I_____S_____. 14 are common words, such as IMPERISHABLE and IMPERISHABLY. A rarer one is INTRAPSYCHIC. In this set, I is the most frequent open letter (26 words). 14 words contain a doubled letter.

Full list 30

Common words

imperishableimperishablyimpressivelyinaccessibleinaccessiblyinadmissibleincreasinglyindecisivelyindigestibleindigestionsintransigentintransitive
imperishableimperishablyimpressivelyinaccessibleinaccessiblyinadmissibleincreasinglyindecisivelyindigestibleindigestionsintransigentintransitiveirresistibleirresistiblyimpressmentsimpuissancesinadmissiblyindigestiblyinterestedlyintumescenceirremissibleinappositelyincalescenceindehiscenceindivisiblesinspissatinginspissationinspissatorsinterpsychicintrapsychic

About this list

Words
30 (14 common words)
Common example
imperishable
Rare example
intrapsychic
Doubled letters
14
Ending in S
5
Most frequent letter
I (26)

Questions

How many 12-letter words matching i_____s_____ are there?

30. 14 of them are common words.

What is a common example?

IMPERISHABLE is among the common words in this set.