15-Letter Words Matching _Y______I______

There are 20 15-letter words that match _Y______I______. 4 are common words, such as HYPERACTIVITIES and SYLLABIFICATION. A rarer one is SYNCHRONISATION. In this set, S is the most frequent open letter (19 words). 2 words contain a doubled letter.

Full list 20

hyperactivitiessyllabificationsynchronizationsystematizationdysfunctionallygyrostabilizershypopituitarismsynchronicitiescytochemistrieshyperexcitementhyperlipidemiashypermobilitieshypersalinitieshypersalivationhypertonicitieshypervigilanceshyposensitizinghypostatizationlymphangiogramssynchronisation

About this list

Words
20 (4 common words)
Common example
hyperactivities
Rare example
synchronisation
Doubled letters
2
Ending in S
10
Most frequent letter
S (19)

Questions

How many 15-letter words matching _y______i______ are there?

20. 4 of them are common words.

What is a common example?

HYPERACTIVITIES is among the common words in this set.