15-Letter Words Matching H_____O________

There are 15 15-letter words that match H_____O________. 1 are common words, such as HILARIOUSNESSES and HISTOCOMPATIBLE. A rarer one is HYPERTONICITIES. In this set, R is the most frequent open letter (14 words). 3 words contain a doubled letter.

Full list 15

hilariousnesseshistocompatiblehydrocortisoneshypercorrectionhypochondriacalhypochondriaseshypochondriasishazardousnesseshemoglobinuriashypercoagulablehypermobilitieshypermodernistshyperpolarizinghypersomnolencehypertonicities

About this list

Words
15 (1 common words)
Common example
hilariousnesses
Rare example
hypertonicities
Doubled letters
3
Ending in S
9
Most frequent letter
R (14)

Questions

How many 15-letter words matching h_____o________ are there?

15. 1 of them are common words.

What is a common example?

HILARIOUSNESSES is among the common words in this set.