15-Letter Words Matching __T__________T_

There are 36 15-letter words that match __T__________T_. 7 are common words, such as ANTHROPOLOGISTS and ANTIDEPRESSANTS. A rarer one is ULTRAMODERNISTS. In this set, I is the most frequent open letter (36 words). 4 words contain a doubled letter.

Full list 36

Common words

anthropologistsantidepressantsantiperspirantsastrophysicistsheterosexualityintelligibilityintercollegiateantepenultimateanthropophagiteintellectualityinterminabilitymetropolitanate
anthropologistsantidepressantsantiperspirantsastrophysicistsheterosexualityintelligibilityintercollegiateantepenultimateanthropophagiteintellectualityinterminabilitymetropolitanatetetrabranchiateanticapitalistsanticonvulsantsantifederalistsantimanagementsantimilitaristsantimonarchistsantimonopolistsantirationalityantiseparatistsastrobiologistscitriculturistscytogeneticistsdithiocarbamateextinguishmentsintegrationistsinterfraternityintertwinementsinteruniversityintervisibilityliturgiologistsmetafictionistsmethylphenidateultramodernists

About this list

Words
36 (7 common words)
Common example
anthropologists
Rare example
ultramodernists
Doubled letters
4
Ending in S
21
Most frequent letter
I (36)

Questions

How many 15-letter words matching __t__________t_ are there?

36. 7 of them are common words.

What is a common example?

ANTHROPOLOGISTS is among the common words in this set.