13-Letter Words Matching ____I_R______

There are 16 13-letter words that match ____I_R______. 5 are common words, such as AMELIORATIONS and CALLIGRAPHERS. A rarer one is SUBLIBRARIANS. In this set, A is the most frequent open letter (14 words). 5 words contain a doubled letter.

Full list 16

ameliorationscalligrapherscalligraphiescalligraphistpatriarchatesamphiprostyleherniorrhaphymatriarchateshandicraftersmultibranchedmultiorgasmicmultitrackingmultitrillionnondisruptivenonlibrarianssublibrarians

About this list

Words
16 (5 common words)
Common example
ameliorations
Rare example
sublibrarians
Doubled letters
5
Ending in S
8
Most frequent letter
A (14)

Questions

How many 13-letter words matching ____i_r______ are there?

16. 5 of them are common words.

What is a common example?

AMELIORATIONS is among the common words in this set.