12-Letter Words Matching ____R_____H_

There are 12 12-letter words that match ____R_____H_. 2 are common words, such as AFTERTHOUGHT and UNDERGROWTHS. A rarer one is SUPERSLEUTHS. In this set, O is the most frequent open letter (11 words). 0 words contain a doubled letter.

Full list 12

afterthoughtundergrowthsheterographyheterotrophyfluorographygastrotrichsheterotrophsintergrowthsinterwroughtpolarographysupergrowthssupersleuths

About this list

Words
12 (2 common words)
Common example
afterthought
Rare example
supersleuths
Doubled letters
0
Ending in S
6
Most frequent letter
O (11)

Questions

How many 12-letter words matching ____r_____h_ are there?

12. 2 of them are common words.

What is a common example?

AFTERTHOUGHT is among the common words in this set.