14-Letter Words Matching _________I_L__

There are 24 14-letter words that match _________I_L__. 4 are common words, such as CONFIDENTIALLY and PREFERENTIALLY. A rarer one is UNCREDENTIALED. 20 words contain a doubled letter.

Full list 24

confidentiallypreferentiallyprofessoriallyprovidentiallydifferentiallyexperientiallyinterstitiallyquinquenniallyantiguerrillasincombustiblesincorruptiblesintracardiallyintracraniallyirresponsiblesmicrofibrillarmicroparticlespestilentiallypresbyteriallypresidentiallypsychosociallyquasiparticlessemiofficiallyuncollectiblesuncredentialed

About this list

Words
24 (4 common words)
Common example
confidentially
Rare example
uncredentialed
Doubled letters
20
Ending in S
7

Questions

How many 14-letter words matching _________i_l__ are there?

24. 4 of them are common words.

What is a common example?

CONFIDENTIALLY is among the common words in this set.