7-Letter Words Matching ____EI_

There are 33 7-letter words that match ____EI_. 9 are common words, such as CONCEIT and FORFEIT. A rarer one is SANSEIS. In this set, N is the most frequent open letter (19 words). 4 words contain a doubled letter.

Full list 33

Common words

conceitforfeithowbeitmulleinproteinsurfeitthereinvilleinwhereinnucleicclupeidcorbeil
conceitforfeithowbeitmulleinproteinsurfeitthereinvilleinwhereinnucleicclupeidcorbeilcroceinhordeinmilreissurveilvermeilagapeicapnoeicapogeicaraneidcaffeincepheidchoreiccysteineisweinepigeiceupneicgalleinnarceinnucleinproteidsanseis

About this list

Words
33 (9 common words)
Common example
conceit
Rare example
sanseis
Doubled letters
4
Ending in S
2
Most frequent letter
N (19)

Questions

How many 7-letter words matching ____ei_ are there?

33. 9 of them are common words.

What is a common example?

CONCEIT is among the common words in this set.