15-Letter Words Matching ______T___O____

There are 17 15-letter words that match ______T___O____. 6 are common words, such as CONSTITUTIONALS and DISCONTINUOUSLY. A rarer one is SUBSTITUTIONARY. In this set, S is the most frequent open letter (16 words). 3 words contain a doubled letter.

Full list 17

constitutionalsdiscontinuouslyinstantaneouslyslaughterhousessuperstitiouslysurreptitiouslydessertspoonfulpresentationismprostatectomiesvespertilionineautochthonouslyconsentaneouslyepizootiologieshelminthologiesnoncontemporarysubreptitiouslysubstitutionary

About this list

Words
17 (6 common words)
Common example
constitutionals
Rare example
substitutionary
Doubled letters
3
Ending in S
5
Most frequent letter
S (16)

Questions

How many 15-letter words matching ______t___o____ are there?

17. 6 of them are common words.

What is a common example?

CONSTITUTIONALS is among the common words in this set.