13-Letter Words Matching ___A_____U___

There are 12 13-letter words that match ___A_____U___. 5 are common words, such as BREAKTHROUGHS and MISADVENTURES. A rarer one is UNMALICIOUSLY. In this set, S is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

breakthroughsmisadventuresperadventurestreacherouslytyrannosaurussplatterpunksstratocumulusmisattributedmisattributessomatopleuressprachgefuhlsunmaliciously

About this list

Words
12 (5 common words)
Common example
breakthroughs
Rare example
unmaliciously
Doubled letters
4
Ending in S
9
Most frequent letter
S (12)

Questions

How many 13-letter words matching ___a_____u___ are there?

12. 5 of them are common words.

What is a common example?

BREAKTHROUGHS is among the common words in this set.