13-Letter Words Matching _____L_E_____

There are 19 13-letter words that match _____L_E_____. 5 are common words, such as FORMALDEHYDES and SCHOOLFELLOWS. A rarer one is UNCHALLENGING. In this set, A is the most frequent open letter (14 words). 12 words contain a doubled letter.

Full list 19

formaldehydesschoolfellowsschoolteachertonsillectomyunadulteratedacetaldehydesmethylmercurynonfilterablepremillennialuninfluentialbenzaldehydeskapellmeisternoncollectorsnoncollegiateprecollegiaterechallengingsubcollectionsubcollegiateunchallenging

About this list

Words
19 (5 common words)
Common example
formaldehydes
Rare example
unchallenging
Doubled letters
12
Ending in S
5
Most frequent letter
A (14)

Questions

How many 13-letter words matching _____l_e_____ are there?

19. 5 of them are common words.

What is a common example?

FORMALDEHYDES is among the common words in this set.