15-Letter Words Matching _______T_R_____

There are 29 15-letter words that match _______T_R_____. 9 are common words, such as AGRICULTURALIST and AMBIDEXTERITIES. A rarer one is TRANSISTORISING. In this set, I is the most frequent open letter (28 words). 8 words contain a doubled letter.

Full list 29

Common words

agriculturalistambidexteritiesinvoluntarinessproprietorshipssupersaturatingsupersaturationtransistorizingtransliteratingtransliterationcrossopterygianinquisitoriallyinstructorships
agriculturalistambidexteritiesinvoluntarinessproprietorshipssupersaturatingsupersaturationtransistorizingtransliteratingtransliterationcrossopterygianinquisitoriallyinstructorshipslepidopterologymultilateralismmultilateralistperfunctorinessproprietoriallystreptothricinssuperheterodynesupernaturalismsupernaturalistcombinatoriallyfragmentarinessheadmastershipslegislatorshipsmouthwateringlypostmastershipsrudimentarinesstransistorising

About this list

Words
29 (9 common words)
Common example
agriculturalist
Rare example
transistorising
Doubled letters
8
Ending in S
11
Most frequent letter
I (28)

Questions

How many 15-letter words matching _______t_r_____ are there?

29. 9 of them are common words.

What is a common example?

AGRICULTURALIST is among the common words in this set.