14-Letter Words Matching ____O_____U___

There are 18 14-letter words that match ____O_____U___. 6 are common words, such as DISCOURTEOUSLY and HIPPOPOTAMUSES. A rarer one is PRECONSCIOUSLY. In this set, S is the most frequent open letter (16 words). 2 words contain a doubled letter.

Full list 18

discourteouslyhippopotamusespreposterouslyprimogenituressubconsciousessubconsciouslymacromolecularmacromoleculessuppositiouslyunpropitiouslymacronucleusesmicronucleusesmicropuncturesnonforfeituresnonhomosexualsorthomolecularpreconsciousespreconsciously

About this list

Words
18 (6 common words)
Common example
discourteously
Rare example
preconsciously
Doubled letters
2
Ending in S
10
Most frequent letter
S (16)

Questions

How many 14-letter words matching ____o_____u___ are there?

18. 6 of them are common words.

What is a common example?

DISCOURTEOUSLY is among the common words in this set.