15-Letter Words Matching ___I_R_________

There are 14 15-letter words that match ___I_R_________. 3 are common words, such as ARBITRARINESSES and LUDICROUSNESSES. A rarer one is SEMITRANSLUCENT. 6 words contain a doubled letter.

Full list 14

arbitrarinessesludicrousnessessemitransparentantiprohibitiondefibrillationsdenitrificationreciprocalitiesantiarrhythmicsantiprogressiveantitraditionaldevitrificationdinitrobenzenessemicrystallinesemitranslucent

About this list

Words
14 (3 common words)
Common example
arbitrarinesses
Rare example
semitranslucent
Doubled letters
6
Ending in S
6

Questions

How many 15-letter words matching ___i_r_________ are there?

14. 3 of them are common words.

What is a common example?

ARBITRARINESSES is among the common words in this set.