15-Letter Words Matching O_T____________

There are 14 15-letter words that match O_T____________. 2 are common words, such as OBTRUSIVENESSES and OUTSPOKENNESSES. A rarer one is OUTMANIPULATING. In this set, I is the most frequent open letter (12 words). 6 words contain a doubled letter.

Full list 14

obtrusivenessesoutspokennessesontogeneticallyorthodonticallyorthopsychiatryosteomyelitidesosteopathicallyobtainabilitiesoptoelectronicsorthogonalitiesorthogonalizingorthophosphatesoutdoorsmanshipoutmanipulating

About this list

Words
14 (2 common words)
Common example
obtrusivenesses
Rare example
outmanipulating
Doubled letters
6
Ending in S
7
Most frequent letter
I (12)

Questions

How many 15-letter words matching o_t____________ are there?

14. 2 of them are common words.

What is a common example?

OBTRUSIVENESSES is among the common words in this set.