15-Letter Words Matching _______TR______

There are 33 15-letter words that match _______TR______. 3 are common words, such as ADMINISTRATIONS and MISCONSTRUCTION. A rarer one is UNSYMMETRICALLY. In this set, I is the most frequent open letter (31 words). 12 words contain a doubled letter.

Full list 33

Common words

administrationsmisconstructionnonconstructiveeconometriciansgravimetricallyphotometricallyradiometricallyrecalcitranciessuperpatriotismbathymetricallycorticotrophinscoulometrically
administrationsmisconstructionnonconstructiveeconometriciansgravimetricallyphotometricallyradiometricallyrecalcitranciessuperpatriotismbathymetricallycorticotrophinscoulometricallydefenestrationsdeindustrializeeconometricallyeudiometricallyheliometricallynonconstructionnonelectrolytesoverabstractingovercentralizedovercentralizesovercontrollingplanimetricallypsychiatricallyreindustrializereregistrationssabermetricianssemiabstractionsupernutritionstechnostructureundernutritionsunsymmetrically

About this list

Words
33 (3 common words)
Common example
administrations
Rare example
unsymmetrically
Doubled letters
12
Ending in S
11
Most frequent letter
I (31)

Questions

How many 15-letter words matching _______tr______ are there?

33. 3 of them are common words.

What is a common example?

ADMINISTRATIONS is among the common words in this set.