12-Letter Words Matching _R_B________

There are 17 12-letter words that match _R_B________. 5 are common words, such as CRABBINESSES and GRUBBINESSES. A rarer one is TRIBOLOGISTS. In this set, I is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 17

crabbinessesgrubbinessesprobationaryprobationerstribulationsprebendariesprobabilismsproboscideantribuneshipsarabinosidesprebreakfastprobabilistsproblematicsproboscidiantribespeopletribologicaltribologists

About this list

Words
17 (5 common words)
Common example
crabbinesses
Rare example
tribologists
Doubled letters
2
Ending in S
11
Most frequent letter
I (16)

Questions

How many 12-letter words matching _r_b________ are there?

17. 5 of them are common words.

What is a common example?

CRABBINESSES is among the common words in this set.