11-Letter Words Matching ____IR_____

There are 30 11-letter words that match ____IR_____. 14 are common words, such as ACQUIREMENT and BESMIRCHING. A rarer one is NONDIRECTED. In this set, N is the most frequent open letter (24 words). 2 words contain a doubled letter.

Full list 30

Common words

acquirementbesmirchingdispiritingimpairmentsinquiringlyinspirationinspiritingmisdirectedmultiracialnonvirulentrequirementrespiration
acquirementbesmirchingdispiritingimpairmentsinquiringlyinspirationinspiritingmisdirectedmultiracialnonvirulentrequirementrespirationrespiratorsrespiratoryconfirmableconfirmedlyenchiridionenquiringlyinspiratoryrepairwomansubdirectorsuspirationunspiritualcoheiressesconfirmandsinspiratorsinspiringlymilliradiannoncircularnondirected

About this list

Words
30 (14 common words)
Common example
acquirement
Rare example
nondirected
Doubled letters
2
Ending in S
5
Most frequent letter
N (24)

Questions

How many 11-letter words matching ____ir_____ are there?

30. 14 of them are common words.

What is a common example?

ACQUIREMENT is among the common words in this set.