15-Letter Words Matching ___R_B_________

There are 15 15-letter words that match ___R_B_________. 3 are common words, such as IMPROBABILITIES and MICROBIOLOGICAL. A rarer one is OVERABSTRACTING. In this set, I is the most frequent open letter (14 words). 1 words contain a doubled letter.

Full list 15

improbabilitiesmicrobiologicalmicrobiologistsheartbreakinglytetrabranchiateastrobiologistsdetribalizationhydrobiologicalhydrobiologistsmicrobarographsneurobiologicalneurobiologistsneuroblastomataopprobriousnessoverabstracting

About this list

Words
15 (3 common words)
Common example
improbabilities
Rare example
overabstracting
Doubled letters
1
Ending in S
7
Most frequent letter
I (14)

Questions

How many 15-letter words matching ___r_b_________ are there?

15. 3 of them are common words.

What is a common example?

IMPROBABILITIES is among the common words in this set.