13-Letter Words Matching _____I____L__

There are 15 13-letter words that match _____I____L__. 6 are common words, such as BOUGAINVILLEA and CENTRIFUGALLY. A rarer one is SYBARITICALLY. In this set, A is the most frequent open letter (14 words). 14 words contain a doubled letter.

Full list 15

bougainvilleacentrifugallycentripetallyparasiticallysoporificallyunequivocallydiacriticallyhonorificallypyramidicallyarthriticallyimperishablesimpoliticallyoverwithholdssubclinicallysybaritically

About this list

Words
15 (6 common words)
Common example
bougainvillea
Rare example
sybaritically
Doubled letters
14
Ending in S
2
Most frequent letter
A (14)

Questions

How many 13-letter words matching _____i____l__ are there?

15. 6 of them are common words.

What is a common example?

BOUGAINVILLEA is among the common words in this set.