11-Letter Words Matching ___Y____O__

There are 20 11-letter words that match ___Y____O__. 4 are common words, such as DEHYDRATORS and PLAYFELLOWS. A rarer one is POLYPHENOLS. In this set, L is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 20

dehydratorsplayfellowspolyandrouspolyhedronsbutyraceouslaryngologylaryngotomymolybdenouspapyraceousplayschoolspolyhydroxypolyphonousalkylationsbutylationspolychotomypolyestrouspolyhistorspolyonymouspolyphagouspolyphenols

About this list

Words
20 (4 common words)
Common example
dehydrators
Rare example
polyphenols
Doubled letters
2
Ending in S
16
Most frequent letter
L (17)

Questions

How many 11-letter words matching ___y____o__ are there?

20. 4 of them are common words.

What is a common example?

DEHYDRATORS is among the common words in this set.