13-Letter Words Matching __________Y__

There are 12 13-letter words that match __________Y__. 4 are common words, such as DAGUERREOTYPE and PSYCHOANALYST. A rarer one is PHOSPHATIDYLS. In this set, O is the most frequent open letter (11 words). 2 words contain a doubled letter.

Full list 12

daguerreotypepsychoanalystpsychoanalyzeunderemployedamphiprostylebutyraldehydespermatophytecounterplayerdaguerreotypymegakaryocytemultiemployerphosphatidyls

About this list

Words
12 (4 common words)
Common example
daguerreotype
Rare example
phosphatidyls
Doubled letters
2
Ending in S
1
Most frequent letter
O (11)

Questions

How many 13-letter words matching __________y__ are there?

12. 4 of them are common words.

What is a common example?

DAGUERREOTYPE is among the common words in this set.