15-Letter Words Matching _U__________O__

There are 23 15-letter words that match _U__________O__. 12 are common words, such as AUTHENTICATIONS and BUSINESSPERSONS. A rarer one is TURBOGENERATORS. In this set, S is the most frequent open letter (23 words). 4 words contain a doubled letter.

Full list 23

authenticationsbusinesspersonshumidificationsmultiplicationsmultiprocessorspulchritudinousquantificationssubstantiationssuperannuationssuperconductorssupererogationssuperscriptionsautosuggestionsautomatizationseutrophicationsmusicalizationssubinfeudationssuperelevationssuperinductionssuperinfectionssupernutritionssuperovulationsturbogenerators

About this list

Words
23 (12 common words)
Common example
authentications
Rare example
turbogenerators
Doubled letters
4
Ending in S
23
Most frequent letter
S (23)

Questions

How many 15-letter words matching _u__________o__ are there?

23. 12 of them are common words.

What is a common example?

AUTHENTICATIONS is among the common words in this set.