12-Letter Words Matching __A_N_______

There are 23 12-letter words that match __A_N_______. 11 are common words, such as BRAININESSES and BRAINSTORMED. A rarer one is TRAINEESHIPS. In this set, I is the most frequent open letter (22 words). 11 words contain a doubled letter.

Full list 23

braininessesbrainstormedbrainteasersbrainwashingbrawninesseschannelizingclannishnessflannelettesgraininessesplainclothesquaintnesseslearnabilityreannexationtrainbearerstrainspotterbrainstormerbrainwashersdiagnoseablediagnosticalstainabilityswainishnesstrainabilitytraineeships

About this list

Words
23 (11 common words)
Common example
braininesses
Rare example
traineeships
Doubled letters
11
Ending in S
12
Most frequent letter
I (22)

Questions

How many 12-letter words matching __a_n_______ are there?

23. 11 of them are common words.

What is a common example?

BRAININESSES is among the common words in this set.