12-Letter Words Matching ______Y__I__

There are 20 12-letter words that match ______Y__I__. 5 are common words, such as HYPOTHYROIDS and MOTORCYCLING. A rarer one is TROPOMYOSINS. In this set, O is the most frequent open letter (18 words). 5 words contain a doubled letter.

Full list 20

hypothyroidsmotorcyclingmotorcyclistparathyroidstetracyclinecyanohydrinsferricyanideferrocyanideperionychiumpyrophyllitetheophyllineviceroyshipsanthocyaninsantiroyalistapocalyptismapocalyptistcockneyfyingphycocyaninspodophyllinstropomyosins

About this list

Words
20 (5 common words)
Common example
hypothyroids
Rare example
tropomyosins
Doubled letters
5
Ending in S
8
Most frequent letter
O (18)

Questions

How many 12-letter words matching ______y__i__ are there?

20. 5 of them are common words.

What is a common example?

HYPOTHYROIDS is among the common words in this set.