15-Letter Words Matching _____HI________

There are 12 15-letter words that match _____HI________. 2 are common words, such as MASOCHISTICALLY and UNSOPHISTICATED. A rarer one is TRANSHISTORICAL. In this set, T is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 12

masochisticallyunsophisticatedfranchisabilityethnohistoriansethnohistoricalfetishisticallyfrenchificationnonachievementsprotohistorianssociohistoricalstoichiometriestranshistorical

About this list

Words
12 (2 common words)
Common example
masochistically
Rare example
transhistorical
Doubled letters
2
Ending in S
4
Most frequent letter
T (12)

Questions

How many 15-letter words matching _____hi________ are there?

12. 2 of them are common words.

What is a common example?

MASOCHISTICALLY is among the common words in this set.