15-Letter Words Matching H____________T_

There are 12 15-letter words that match H____________T_. 3 are common words, such as HARPSICHORDISTS and HETEROSEXUALITY. A rarer one is HYPNOTIZABILITY. 1 words contain a doubled letter.

Full list 12

harpsichordistsheterosexualityhorticulturistsheliocentricityhypnotherapistshomotransplantshydrobiologistshydroxylapatitehypermodernistshypermutabilityhyperreactivityhypnotizability

About this list

Words
12 (3 common words)
Common example
harpsichordists
Rare example
hypnotizability
Doubled letters
1
Ending in S
6

Questions

How many 15-letter words matching h____________t_ are there?

12. 3 of them are common words.

What is a common example?

HARPSICHORDISTS is among the common words in this set.