12-Letter Words Matching I________S__

There are 41 12-letter words that match I________S__. 16 are common words, such as IDOLATRESSES and ILLUSIONISTS. A rarer one is ISOCHRONISMS. In this set, N is the most frequent open letter (32 words). 19 words contain a doubled letter.

Full list 41

Common words

idolatressesillusionistsimperialismsimperialistsimperviouslyimpishnessesincestuouslyindecorouslyinfectiouslyingloriouslyiniquitouslyinnatenesses
idolatressesillusionistsimperialismsimperialistsimperviouslyimpishnessesincestuouslyindecorouslyinfectiouslyingloriouslyiniquitouslyinnatenessesintentnessesintercoursesinterspersedinterspersesidolatrouslyimpurenessesincautiouslyindigenouslyinfantilismsintactnessesinwardnessesirredentismsirredentistsisomorphismsillusionismsimmanentismsimmanentistsimmortalisedimmortalisesinsanenessesintercrossedintercrossesinteriorisedinteriorisesinternalisedinternalisesinventressesiridologistsisochronisms

About this list

Words
41 (16 common words)
Common example
idolatresses
Rare example
isochronisms
Doubled letters
19
Ending in S
27
Most frequent letter
N (32)

Questions

How many 12-letter words matching i________s__ are there?

41. 16 of them are common words.

What is a common example?

IDOLATRESSES is among the common words in this set.