15-Letter Words Matching ___I_L_________

There are 19 15-letter words that match ___I_L_________. 7 are common words, such as DISILLUSIONMENT and FRUITLESSNESSES. A rarer one is OSCILLOGRAPHIES. In this set, S is the most frequent open letter (18 words). 11 words contain a doubled letter.

Full list 19

disillusionmentfruitlessnessesinviolabilitieslimitlessnessespusillanimitiespusillanimouslyunwillingnessesanticlericalismsocialisticallysociolinguisticantialcoholismsantiallergenicsanticlericalistanticlimacticalbidialectalismsbrainlessnessesinviolatenesseslegislatorshipsoscillographies

About this list

Words
19 (7 common words)
Common example
disillusionment
Rare example
oscillographies
Doubled letters
11
Ending in S
12
Most frequent letter
S (18)

Questions

How many 15-letter words matching ___i_l_________ are there?

19. 7 of them are common words.

What is a common example?

DISILLUSIONMENT is among the common words in this set.