13-Letter Words Matching __D_____R____

There are 14 13-letter words that match __D_____R____. 3 are common words, such as UNDERCARRIAGE and UNDERCHARGING. A rarer one is UNDERSHERIFFS. In this set, E is the most frequent open letter (13 words). 3 words contain a doubled letter.

Full list 14

undercarriageunderchargingundercurrentsandrosteroneshydrometricalundeliverableundiscouragedhydrothoraceshydrothoraxesmoderatorshipradiothoriumsredintegratedredintegratesundersheriffs

About this list

Words
14 (3 common words)
Common example
undercarriage
Rare example
undersheriffs
Doubled letters
3
Ending in S
7
Most frequent letter
E (13)

Questions

How many 13-letter words matching __d_____r____ are there?

14. 3 of them are common words.

What is a common example?

UNDERCARRIAGE is among the common words in this set.