12-Letter Words Matching ______Y_N___

There are 15 12-letter words that match ______Y_N___. 4 are common words, such as FLAMBOYANCES and FLAMBOYANTLY. A rarer one is UNDERLYINGLY. In this set, I is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 15

flamboyancesflamboyantlysatisfyinglyterrifyinglyferricyanideferrocyanidegratifyinglyhorrifyinglymortifyinglymystifyinglystupefyinglyanthocyaninsphycocyaninsscarifyinglyunderlyingly

About this list

Words
15 (4 common words)
Common example
flamboyances
Rare example
underlyingly
Doubled letters
4
Ending in S
3
Most frequent letter
I (13)

Questions

How many 12-letter words matching ______y_n___ are there?

15. 4 of them are common words.

What is a common example?

FLAMBOYANCES is among the common words in this set.