15-Letter Words Matching ____R_B________

There are 16 15-letter words that match ____R_B________. 4 are common words, such as DESIRABLENESSES and HONORABLENESSES. A rarer one is VENERABLENESSES. 10 words contain a doubled letter.

Full list 16

desirablenesseshonorablenessesmiserablenessessuperabundancesadmirablenessesdistributorshipfavorablenessesenterobacterialenterobacteriumexecrablenessesmemorablenessesseparablenessessuperablenessessuperabsorbentssuperabundantlyvenerablenesses

About this list

Words
16 (4 common words)
Common example
desirablenesses
Rare example
venerablenesses
Doubled letters
10
Ending in S
12

Questions

How many 15-letter words matching ____r_b________ are there?

16. 4 of them are common words.

What is a common example?

DESIRABLENESSES is among the common words in this set.