15-Letter Words Matching _________A__E__

There are 21 15-letter words that match _________A__E__. 3 are common words, such as AUTOBIOGRAPHERS and STRAIGHTJACKETS. A rarer one is SYMMETRICALNESS. 18 words contain a doubled letter.

Full list 21

autobiographersstraightjacketswhippersnappersfantasticalnessimpracticalnessineffectualnesssuperficialnessunequivocalnessallegoricalnessdictatorialnessexceptionalnessgrammaticalnessinterphalangealmetallographersnonsensicalnessparadoxicalnesspharisaicalnessprejudicialnesssnippersnapperssubstantialnesssymmetricalness

About this list

Words
21 (3 common words)
Common example
autobiographers
Rare example
symmetricalness
Doubled letters
18
Ending in S
20

Questions

How many 15-letter words matching _________a__e__ are there?

21. 3 of them are common words.

What is a common example?

AUTOBIOGRAPHERS is among the common words in this set.