15-Letter Words Matching ____________AN_

There are 19 15-letter words that match ____________AN_. 4 are common words, such as DISCIPLINARIANS and LATITUDINARIANS. A rarer one is UNIFORMITARIANS. In this set, R is the most frequent open letter (18 words). 2 words contain a doubled letter.

Full list 19

disciplinarianslatitudinariansseptuagenariansvaletudinarianscounterclaimantcounterirritanteconometricianssesquipedaliansethnohistorianshexachlorethaneichthyosauriansnonutilitariansoverextravagantpredestinarianspremillenariansprotohistorianssabermetricianssolitudinariansuniformitarians

About this list

Words
19 (4 common words)
Common example
disciplinarians
Rare example
uniformitarians
Doubled letters
2
Ending in S
15
Most frequent letter
R (18)

Questions

How many 15-letter words matching ____________an_ are there?

19. 4 of them are common words.

What is a common example?

DISCIPLINARIANS is among the common words in this set.