14-Letter Words Matching __T_N_________

There are 20 14-letter words that match __T_N_________. 3 are common words, such as EXTINGUISHABLE and OSTENTATIOUSLY. A rarer one is UNTENABILITIES. In this set, E is the most frequent open letter (19 words). 3 words contain a doubled letter.

Full list 20

extinguishableostentatiouslypotentialitiesintangiblenessintentionalitymetencephalonspotentiometersretinoblastomaactinomorphiesactinomycetousantineoplasticantinomianismsdetonabilitiesextendednessesextensionalityextinguishmentintensionalitymutinousnessespotentiometricuntenabilities

About this list

Words
20 (3 common words)
Common example
extinguishable
Rare example
untenabilities
Doubled letters
3
Ending in S
11
Most frequent letter
E (19)

Questions

How many 14-letter words matching __t_n_________ are there?

20. 3 of them are common words.

What is a common example?

EXTINGUISHABLE is among the common words in this set.