15-Letter Words Matching ____P_I________

There are 13 15-letter words that match ____P_I________. 4 are common words, such as DECEPTIVENESSES and EXEMPLIFICATION. A rarer one is SUBOPTIMIZATION. In this set, T is the most frequent open letter (13 words). 6 words contain a doubled letter.

Full list 13

deceptivenessesexemplificationreceptivenessesunsophisticatedexemplificativeinapplicabilityinexplicabilitysolipsisticallyacceptingnessesexceptionalismsexceptionalnessreduplicativelysuboptimization

About this list

Words
13 (4 common words)
Common example
deceptivenesses
Rare example
suboptimization
Doubled letters
6
Ending in S
5
Most frequent letter
T (13)

Questions

How many 15-letter words matching ____p_i________ are there?

13. 4 of them are common words.

What is a common example?

DECEPTIVENESSES is among the common words in this set.