12-Letter Words Matching _EX_________

There are 21 12-letter words that match _EX_________. 2 are common words, such as LEXICOGRAPHY and SEXAGENARIAN. A rarer one is VEXILLOLOGIC. In this set, I is the most frequent open letter (17 words). 3 words contain a doubled letter.

Full list 21

lexicographysexagenariandextralitiesdextrogyratehexametricallexicologieslexicologistsexcentenarysexdecillionsextillionthsextuplicatedextrorotaryhexadecimalshexahydrateshexaploidieshexobarbitallexicalitieslexicalizingsexagesimalssextodecimosvexillologic

About this list

Words
21 (2 common words)
Common example
lexicography
Rare example
vexillologic
Doubled letters
3
Ending in S
8
Most frequent letter
I (17)

Questions

How many 12-letter words matching _ex_________ are there?

21. 2 of them are common words.

What is a common example?

LEXICOGRAPHY is among the common words in this set.