13-Letter Words Matching __A_______R__

There are 19 13-letter words that match __A_______R__. 9 are common words, such as BRAINCHILDREN and GRANDCHILDREN. A rarer one is TRANSCULTURAL. In this set, R is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 19

brainchildrengrandchildrengrandfatheredgrandfatherlygrandmotherlyheadquarteredplasterboardsquadrilateraltransgenderedblastospheresbrachiosaurusclapperboardscyanobacteriadraughtboardsflavopurpurinphallocentrictrapezohedronweatherboardstranscultural

About this list

Words
19 (9 common words)
Common example
brainchildren
Rare example
transcultural
Doubled letters
2
Ending in S
6
Most frequent letter
R (16)

Questions

How many 13-letter words matching __a_______r__ are there?

19. 9 of them are common words.

What is a common example?

BRAINCHILDREN is among the common words in this set.