12-Letter Words Matching ____A_____U_

There are 19 12-letter words that match ____A_____U_. 6 are common words, such as CANTANKEROUS and NONCANCEROUS. A rarer one is ULTRASERIOUS. 0 words contain a doubled letter.

Full list 19

cantankerousnoncancerousnonhazardousprecancerousprotactiniumrestaurateurachlamydeousbombacaceouscharacterfulintrapreneurnoctambulousnonmalicioussantalaceoussmilacaceousstyracaceoustetrapterousphiladelphusultracarefulultraserious

About this list

Words
19 (6 common words)
Common example
cantankerous
Rare example
ultraserious
Doubled letters
0
Ending in S
14

Questions

How many 12-letter words matching ____a_____u_ are there?

19. 6 of them are common words.

What is a common example?

CANTANKEROUS is among the common words in this set.