15-Letter Words Matching _U_____I_______

There are 18 15-letter words that match _U_____I_______. 7 are common words, such as AUTHENTICATIONS and HUMIDIFICATIONS. A rarer one is SUSCEPTIBLENESS. 4 words contain a doubled letter.

Full list 18

authenticationshumidificationsmultiplicationspunctiliousnessquantificationssuperstitiouslysurreptitiouslyautoradiographsrumbustiousnessautomatizationsautoradiographyeutrophicationsmusicalizationssubreptitiouslysubspecializingsuperstimulatedsuperstimulatessusceptibleness

About this list

Words
18 (7 common words)
Common example
authentications
Rare example
susceptibleness
Doubled letters
4
Ending in S
12

Questions

How many 15-letter words matching _u_____i_______ are there?

18. 7 of them are common words.

What is a common example?

AUTHENTICATIONS is among the common words in this set.