15-Letter Words Matching H_______R______

There are 16 15-letter words that match H_______R______. 2 are common words, such as HUMANITARIANISM and HYPERTHYROIDISM. A rarer one is HYPERSECRETIONS. In this set, E is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 16

humanitarianismhyperthyroidismhereditarianismheterochromaticheterochromatinhexachlorophenehypercorrectionhypnotherapistsheliometricallyhematoporphyrinheteromorphismshexachlorethanehydroxyprolineshyperaggressivehyperexcretionshypersecretions

About this list

Words
16 (2 common words)
Common example
humanitarianism
Rare example
hypersecretions
Doubled letters
3
Ending in S
5
Most frequent letter
E (15)

Questions

How many 15-letter words matching h_______r______ are there?

16. 2 of them are common words.

What is a common example?

HUMANITARIANISM is among the common words in this set.