14-Letter Words Matching A_____N_______

There are 18 14-letter words that match A_____N_______. 2 are common words, such as ANTIGENICITIES and ARGUMENTATIONS. A rarer one is APPARENTNESSES. 3 words contain a doubled letter.

Full list 18

antigenicitiesargumentationsacrylonitrilesaerodynamicistambulancewomanambulancewomenantimonarchistautoionizationaccidentalnessaggiornamentosalkalinizationantepenultimasanticensorshipanticonvulsantanticonvulsiveantimanagementantimonopolistapparentnesses

About this list

Words
18 (2 common words)
Common example
antigenicities
Rare example
apparentnesses
Doubled letters
3
Ending in S
7

Questions

How many 14-letter words matching a_____n_______ are there?

18. 2 of them are common words.

What is a common example?

ANTIGENICITIES is among the common words in this set.