13-Letter Words Matching __B_________Y

There are 19 13-letter words that match __B_________Y. 4 are common words, such as AMBIDEXTERITY and SUBSERVIENTLY. A rarer one is UNBEAUTIFULLY. In this set, I is the most frequent open letter (17 words). 7 words contain a doubled letter.

Full list 19

ambidexteritysubservientlysubstantiallysubstantivelybibliotherapyembryonicallysubjunctivelysubordinatelysubventionaryunbelievinglyambisexualityembarrassedlyrebarbativelysubclinicallysubculturallysubinhibitorysubversionarysybariticallyunbeautifully

About this list

Words
19 (4 common words)
Common example
ambidexterity
Rare example
unbeautifully
Doubled letters
7
Ending in S
0
Most frequent letter
I (17)

Questions

How many 13-letter words matching __b_________y are there?

19. 4 of them are common words.

What is a common example?

AMBIDEXTERITY is among the common words in this set.