12-Letter Words Matching _____A____O_

There are 20 12-letter words that match _____A____O_. 7 are common words, such as AMALGAMATION and BRAGGADOCIOS. A rarer one is REESCALATION. In this set, N is the most frequent open letter (16 words). 6 words contain a doubled letter.

Full list 20

amalgamationbraggadociosburglarproofdeescalationexhilarationproclamationspermatozoonantihalationcamerapersoncontradictordisclamationdodecahedronepithalamionovertaxationprothalamionstigmasteroldesquamationnonclassroompyrocatecholreescalation

About this list

Words
20 (7 common words)
Common example
amalgamation
Rare example
reescalation
Doubled letters
6
Ending in S
1
Most frequent letter
N (16)

Questions

How many 12-letter words matching _____a____o_ are there?

20. 7 of them are common words.

What is a common example?

AMALGAMATION is among the common words in this set.