11-Letter Words Starting With COS

There are 14 11-letter words that start with COS. 8 are common words, such as COSIGNATORY and COSMETICIAN. A rarer one is COSTUMERIES. In this set, I is the most frequent open letter (11 words). 1 words contain a doubled letter.

Full list 14

cosignatorycosmeticiancosmetologycosmogoniescosmogonistcosmologiescosmologistcosponsoredcosmographycosmopolitecoscriptingcosmeticizecostivenesscostumeries

About this list

Words
14 (8 common words)
Common example
cosignatory
Rare example
costumeries
Doubled letters
1
Ending in S
4
Most frequent letter
I (11)

Questions

How many 11-letter words starting with cos are there?

14. 8 of them are common words.

What is a common example?

COSIGNATORY is among the common words in this set.