14-Letter Words Matching ______O___U___

There are 16 14-letter words that match ______O___U___. 3 are common words, such as HIPPOPOTAMUSES and PARSIMONIOUSLY. A rarer one is ORTHOMOLECULAR. In this set, L is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 16

hippopotamusesparsimoniouslyvaingloriouslyintermolecularintramolecularmacromolecularmacromoleculessupramolecularelectrotonuseshemoglobinuriahemoglobinuricincommodiouslyinharmoniouslymultimolecularnonhomosexualsorthomolecular

About this list

Words
16 (3 common words)
Common example
hippopotamuses
Rare example
orthomolecular
Doubled letters
2
Ending in S
4
Most frequent letter
L (15)

Questions

How many 14-letter words matching ______o___u___ are there?

16. 3 of them are common words.

What is a common example?

HIPPOPOTAMUSES is among the common words in this set.