15-Letter Words Matching __I__T_________

There are 12 15-letter words that match __I__T_________. 5 are common words, such as FRIGHTFULNESSES and IMITATIVENESSES. A rarer one is SPIRITUALNESSES. In this set, N is the most frequent open letter (12 words). 7 words contain a doubled letter.

Full list 12

frightfulnessesimitativenessesprimitivenessestrinitrotolueneutilitarianismsazidothymidinescoinstantaneoustrinitrobenzeneanisotropicallyorientationallyreinstallationsspiritualnesses

About this list

Words
12 (5 common words)
Common example
frightfulnesses
Rare example
spiritualnesses
Doubled letters
7
Ending in S
8
Most frequent letter
N (12)

Questions

How many 15-letter words matching __i__t_________ are there?

12. 5 of them are common words.

What is a common example?

FRIGHTFULNESSES is among the common words in this set.