14-Letter Words Matching ____I_R_______

There are 12 14-letter words that match ____I_R_______. 3 are common words, such as CALLIGRAPHISTS and MULTIPROCESSOR. A rarer one is NONNITROGENOUS. In this set, T is the most frequent open letter (11 words). 4 words contain a doubled letter.

Full list 12

calligraphistsmultiprocessorsubmicroscopicamphiarthrosishandicraftsmantrinitrocresoltrinitrophenolamphiprostyleshandicraftsmenmultifrequencymultitrillionsnonnitrogenous

About this list

Words
12 (3 common words)
Common example
calligraphists
Rare example
nonnitrogenous
Doubled letters
4
Ending in S
5
Most frequent letter
T (11)

Questions

How many 14-letter words matching ____i_r_______ are there?

12. 3 of them are common words.

What is a common example?

CALLIGRAPHISTS is among the common words in this set.