12-Letter Words Matching ____A_N_____

There are 24 12-letter words that match ____A_N_____. 8 are common words, such as ACQUAINTANCE and CASUALNESSES. A rarer one is VENIALNESSES. In this set, E is the most frequent open letter (21 words). 11 words contain a doubled letter.

Full list 24

acquaintancecasualnessescontainerizecontainmentsdisdainfullyedutainmentsgeomagnetismsemiannuallycaptainshipsdiamagnetismfrugalnessessustainmentsvillainessesvillainouslycontainerisedetrainmentsdismalnessesenchainmentsentrainmentsformalnessesrechannelingrechannelledrefrainmentsvenialnesses

About this list

Words
24 (8 common words)
Common example
acquaintance
Rare example
venialnesses
Doubled letters
11
Ending in S
14
Most frequent letter
E (21)

Questions

How many 12-letter words matching ____a_n_____ are there?

24. 8 of them are common words.

What is a common example?

ACQUAINTANCE is among the common words in this set.