13-Letter Words Matching ______T_____M

There are 17 13-letter words that match ______T_____M. 3 are common words, such as EXHIBITIONISM and PERFECTIONISM. A rarer one is THERMOTROPISM. In this set, I is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 17

exhibitionismperfectionismprotectionismannexationismapogeotropismconceptualismcontextualismdiageotropismrevolutionismstereotropismthigmotropismantiritualismcredentialismdecamethoniumhexamethoniummonometallismthermotropism

About this list

Words
17 (3 common words)
Common example
exhibitionism
Rare example
thermotropism
Doubled letters
2
Ending in S
0
Most frequent letter
I (17)

Questions

How many 13-letter words matching ______t_____m are there?

17. 3 of them are common words.

What is a common example?

EXHIBITIONISM is among the common words in this set.