13-Letter Words Matching ___IR________

There are 30 13-letter words that match ___IR________. 12 are common words, such as AFFIRMATIVELY and AVOIRDUPOISES. A rarer one is SUBIRRIGATION. In this set, N is the most frequent open letter (26 words). 10 words contain a doubled letter.

Full list 30

Common words

affirmativelyavoirdupoisesbidirectionalchairmanshipsclairvoyancesdeliriousnessdesirablenessencirclementsenvironmentalnonirritatingrecirculatinguncircumcised
affirmativelyavoirdupoisesbidirectionalchairmanshipsclairvoyancesdeliriousnessdesirablenessencirclementsenvironmentalnonirritatingrecirculatinguncircumcisedadmirablenessantirejectionantireligiousclairaudiencerecirculationsemireligioussquirearchiesantirecessionantirheumaticantiritualismantiromanticsantiroyalistsclairvoyantlynonirradiatedoneiromanciesretirednessessubirrigatingsubirrigation

About this list

Words
30 (12 common words)
Common example
affirmatively
Rare example
subirrigation
Doubled letters
10
Ending in S
14
Most frequent letter
N (26)

Questions

How many 13-letter words matching ___ir________ are there?

30. 12 of them are common words.

What is a common example?

AFFIRMATIVELY is among the common words in this set.