13-Letter Words Matching _____B____O__

There are 13 13-letter words that match _____B____O__. 5 are common words, such as COLLABORATORS and CORROBORATORS. A rarer one is NEUROBLASTOMA. In this set, R is the most frequent open letter (12 words). 5 words contain a doubled letter.

Full list 13

collaboratorscorroboratorscorroboratoryneighborhoodsperambulatorsconfabulatoryperambulatoryreverberatoryconfabulatorsdermabrasionselucubrationsmultibillionsneuroblastoma

About this list

Words
13 (5 common words)
Common example
collaborators
Rare example
neuroblastoma
Doubled letters
5
Ending in S
8
Most frequent letter
R (12)

Questions

How many 13-letter words matching _____b____o__ are there?

13. 5 of them are common words.

What is a common example?

COLLABORATORS is among the common words in this set.