12-Letter Words Matching ____O_____U_

There are 48 12-letter words that match ____O_____U_. 7 are common words, such as CARBONACEOUS and DISCOURTEOUS. A rarer one is UNPROSPEROUS. In this set, S is the most frequent open letter (43 words). 6 words contain a doubled letter.

Full list 48

Common words

carbonaceousdiscourteoushippopotamusnonpoisonouspreposteroussubconsciousunpropitiousandrocliniumanemophilouscarpophagouscirrocumuluscirrostratus
carbonaceousdiscourteoushippopotamusnonpoisonouspreposteroussubconsciousunpropitiousandrocliniumanemophilouscarpophagouscirrocumuluscirrostratuscoprophagouscoprophilousdiatomaceoushectocotylushydrophiloushygrophilousmacronucleusmacropterousmatroclinousmicronucleusnimbostratusorthopterousorthotropousperionychiumphotophilousphysostomousphytophagouspreconsciousradiothoriumrhizocarpoussaprophagousstenophagoussuppositioustropophilousunthoughtfulanthophilouscladophyllumcoleopterousheliolatrousmicrosporousmicrovillousnecrophagousneuropterousnonconsciousoligophagousunprosperous

About this list

Words
48 (7 common words)
Common example
carbonaceous
Rare example
unprosperous
Doubled letters
6
Ending in S
43
Most frequent letter
S (43)

Questions

How many 12-letter words matching ____o_____u_ are there?

48. 7 of them are common words.

What is a common example?

CARBONACEOUS is among the common words in this set.