13-Letter Words Matching ____E__H_____

There are 12 13-letter words that match ____E__H_____. 4 are common words, such as ENTRENCHMENTS and NECKERCHIEVES. A rarer one is SYNAESTHESIAS. In this set, E is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 12

entrenchmentsneckerchievesoveremphasizeretrenchmentshendecahedronmantelshelvestrapezohedroncollenchymatahappenchancesparaesthesiasstereophoniessynaesthesias

About this list

Words
12 (4 common words)
Common example
entrenchments
Rare example
synaesthesias
Doubled letters
2
Ending in S
8
Most frequent letter
E (11)

Questions

How many 13-letter words matching ____e__h_____ are there?

12. 4 of them are common words.

What is a common example?

ENTRENCHMENTS is among the common words in this set.