7-Letter Words Matching ___E__O

There are 18 7-letter words that match ___E__O. 7 are common words, such as ALLEGRO and CHEERIO. A rarer one is UNDERDO. In this set, R is the most frequent open letter (10 words). 5 words contain a doubled letter.

Full list 18

allegrocheerioinfernomementopimentoscherzoundergocavettomorelloreversostrettouptempomarengomomentooutechoseneciosubechounderdo

About this list

Words
18 (7 common words)
Common example
allegro
Rare example
underdo
Doubled letters
5
Ending in S
0
Most frequent letter
R (10)

Questions

How many 7-letter words matching ___e__o are there?

18. 7 of them are common words.

What is a common example?

ALLEGRO is among the common words in this set.