15-Letter Words Matching _Y____________S

There are 48 15-letter words that match _Y____________S. 5 are common words, such as HYDROCEPHALUSES and HYPERACTIVITIES. A rarer one is SYNCHRONOUSNESS. In this set, I is the most frequent open letter (43 words). 5 words contain a doubled letter.

Full list 48

Common words

hydrocephaluseshyperactivitieshyperventilateshypothyroidismstyrannosaurusescyanocobalaminsgyrostabilizershydrocortisoneshyperextensionshypnotherapistshypochondriaseshypochondriasis
hydrocephaluseshyperactivitieshyperventilateshypothyroidismstyrannosaurusescyanocobalaminsgyrostabilizershydrocortisoneshyperextensionshypnotherapistshypochondriaseshypochondriasismyelencephalonssynchronicitieszygophyllaceouscyproheptadinescytochemistriescytogeneticistscytomegalovirusgyrofrequencieshydrobiologistshydroxyapatiteshydroxyprolineshyperaesthesiashypercriticismshyperexcretionshyperfastidioushyperinflationshyperlipidemiashypermobilitieshypermodernistshypersalinitieshypersecretionshypersensitizeshyperstimulateshypertonicitieshypervelocitieshypervigilanceshypomagnesemiaslymphadenitiseslymphangiogramslymphocytosiseslyophilizationslysogenizationssymmetricalnesssymmetrizationssympathectomiessynchronousness

About this list

Words
48 (5 common words)
Common example
hydrocephaluses
Rare example
synchronousness
Doubled letters
5
Ending in S
48
Most frequent letter
I (43)

Questions

How many 15-letter words matching _y____________s are there?

48. 5 of them are common words.

What is a common example?

HYDROCEPHALUSES is among the common words in this set.