13-Letter Words Matching A_I__________

There are 24 13-letter words that match A_I__________. 6 are common words, such as AMICABILITIES and ANIMADVERSION. A rarer one is AXISYMMETRIES. In this set, I is the most frequent open letter (21 words). 8 words contain a doubled letter.

Full list 24

amicabilitiesanimadversionanimadvertingaristocraciesarithmeticianaxiomaticallyacidificationadiabaticallyadiathermancyalimentationsamiablenessesamitriptylineanisometropiaapiculturistsabiogenicallyaminoaciduriaaminophyllineanimalizationanimatenessesanisometropicanisotropismsaviculturistsaxiologicallyaxisymmetries

About this list

Words
24 (6 common words)
Common example
amicabilities
Rare example
axisymmetries
Doubled letters
8
Ending in S
9
Most frequent letter
I (21)

Questions

How many 13-letter words matching a_i__________ are there?

24. 6 of them are common words.

What is a common example?

AMICABILITIES is among the common words in this set.