15-Letter Words Matching _U________T____

There are 22 15-letter words that match _U________T____. 9 are common words, such as AUTHENTICATIONS and HUMIDIFICATIONS. A rarer one is SUPERSYMMETRIES. In this set, S is the most frequent open letter (22 words). 3 words contain a doubled letter.

Full list 22

authenticationshumidificationsmultiplicationsquantificationssubstantiationssuperannuationssupererogationssuperscriptionssuperstructuresautosuggestionssuperstructuralautomatizationseutrophicationsmusicalizationssubinfeudationssubmetacentricssuperelevationssuperinductionssuperinfectionssupernutritionssuperovulationssupersymmetries

About this list

Words
22 (9 common words)
Common example
authentications
Rare example
supersymmetries
Doubled letters
3
Ending in S
21
Most frequent letter
S (22)

Questions

How many 15-letter words matching _u________t____ are there?

22. 9 of them are common words.

What is a common example?

AUTHENTICATIONS is among the common words in this set.