15-Letter Words Matching ____H___O______

There are 20 15-letter words that match ____H___O______. 3 are common words, such as MISCHIEVOUSNESS and OPHTHALMOLOGIES. A rarer one is SYNCHRONOUSNESS. In this set, S is the most frequent open letter (18 words). 2 words contain a doubled letter.

Full list 20

mischievousnessophthalmologiesophthalmologistgeochronologistmorphophonemicsophthalmoscopespsychobiologistweatherboardingecophysiologiesepichlorohydrinepitheliomatouserythropoietinsgeochronologiesophthalmoscopicplethysmographsplethysmographypsychoacousticspsychobiographypsychobiologiessynchronousness

About this list

Words
20 (3 common words)
Common example
mischievousness
Rare example
synchronousness
Doubled letters
2
Ending in S
12
Most frequent letter
S (18)

Questions

How many 15-letter words matching ____h___o______ are there?

20. 3 of them are common words.

What is a common example?

MISCHIEVOUSNESS is among the common words in this set.