13-Letter Words Matching ____T_____D__

There are 14 13-letter words that match ____T_____D__. 2 are common words, such as COUNTERMANDED and MOUNTAINSIDES. A rarer one is PROSTATITIDES. 3 words contain a doubled letter.

Full list 14

countermandedmountainsidesboustrophedonlightheadedlyunmitigatedlyconstrainedlycounterbiddencounterraidedcountertradescrystalloidalnicotinamidesperitonitidesprostaglandinprostatitides

About this list

Words
14 (2 common words)
Common example
countermanded
Rare example
prostatitides
Doubled letters
3
Ending in S
5

Questions

How many 13-letter words matching ____t_____d__ are there?

14. 2 of them are common words.

What is a common example?

COUNTERMANDED is among the common words in this set.