13-Letter Words Matching B_R__________

There are 15 13-letter words that match B_R__________. 4 are common words, such as BARBARIANISMS and BUREAUCRACIES. A rarer one is BURGLARIOUSLY. In this set, A is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 15

barbarianismsbureaucraciesbureaucratizeburglarproofsbarbarizationbarbarousnessbirefringenceboraginaceousborosilicatesbarefacednessbaroreceptorsbureaucratesebureaucratisebureaucratismburglariously

About this list

Words
15 (4 common words)
Common example
barbarianisms
Rare example
burglariously
Doubled letters
3
Ending in S
8
Most frequent letter
A (14)

Questions

How many 13-letter words matching b_r__________ are there?

15. 4 of them are common words.

What is a common example?

BARBARIANISMS is among the common words in this set.