15-Letter Words Matching ____H____I_____

There are 12 15-letter words that match ____H____I_____. 2 are common words, such as PSYCHEDELICALLY and PSYCHOLOGICALLY. A rarer one is PSYCHIATRICALLY. In this set, S is the most frequent open letter (11 words). 7 words contain a doubled letter.

Full list 12

psychedelicallypsychologicallymorphologicallypantheisticallypsephologicallypsychogenicallypsychotomimeticerythropoietinsfeatherstitchedfeatherstitcheslymphadenitisespsychiatrically

About this list

Words
12 (2 common words)
Common example
psychedelically
Rare example
psychiatrically
Doubled letters
7
Ending in S
3
Most frequent letter
S (11)

Questions

How many 15-letter words matching ____h____i_____ are there?

12. 2 of them are common words.

What is a common example?

PSYCHEDELICALLY is among the common words in this set.