14-Letter Words Matching ___A__A_______

There are 17 14-letter words that match ___A__A_______. 9 are common words, such as ADVANTAGEOUSLY and AMBASSADORSHIP. A rarer one is PALATIALNESSES. In this set, S is the most frequent open letter (16 words). 15 words contain a doubled letter.

Full list 17

advantageouslyambassadorshipambassadressesdisadvantagingdisarrangementembarrassinglyembarrassmentsprearrangementremarkablenessimpassablenessinsatiablenessinvaluablenessinvariablenessmanageablenessmetastaticallynonattachmentspalatialnesses

About this list

Words
17 (9 common words)
Common example
advantageously
Rare example
palatialnesses
Doubled letters
15
Ending in S
10
Most frequent letter
S (16)

Questions

How many 14-letter words matching ___a__a_______ are there?

17. 9 of them are common words.

What is a common example?

ADVANTAGEOUSLY is among the common words in this set.