11-Letter Words Matching _____YS____

There are 12 11-letter words that match _____YS____. 4 are common words, such as BIOPHYSICAL and GEOPHYSICAL. A rarer one is SURETYSHIPS. In this set, I is the most frequent open letter (9 words). 2 words contain a doubled letter.

Full list 12

biophysicalgeophysicalmonkeyshinenonphysicalamethystinecherrystonediddlysquatautolysatesmistrystingpolylysinespyrolysatessuretyships

About this list

Words
12 (4 common words)
Common example
biophysical
Rare example
suretyships
Doubled letters
2
Ending in S
4
Most frequent letter
I (9)

Questions

How many 11-letter words matching _____ys____ are there?

12. 4 of them are common words.

What is a common example?

BIOPHYSICAL is among the common words in this set.