11-Letter Words Matching ____R__B___

There are 13 11-letter words that match ____R__B___. 5 are common words, such as INVARIABLES and JACKRABBITS. A rarer one is UNWORKABLES. 3 words contain a doubled letter.

Full list 13

invariablesjackrabbitsreturnablesunscrambledunscramblesobservablessupersubtledeferrablesinterrobanginterurbansreversiblesunscramblerunworkables

About this list

Words
13 (5 common words)
Common example
invariables
Rare example
unworkables
Doubled letters
3
Ending in S
9

Questions

How many 11-letter words matching ____r__b___ are there?

13. 5 of them are common words.

What is a common example?

INVARIABLES is among the common words in this set.