14-Letter Words Matching _____I_____N__

There are 21 14-letter words that match _____I_____N__. 6 are common words, such as ANTIHISTAMINES and CONSTITUTIONAL. A rarer one is SUBSTITUTIONAL. 2 words contain a doubled letter.

Full list 21

antihistaminesconstitutionaldenominationalgrandiloquenceorganizationalsteppingstonesabortifacientsantihistaminicdisquisitionaldistributionalinterinsuranceamitriptylinescivilizationalconspirationaldryopithecinesinterinfluencenoncoincidencenortriptylinespenicillaminessesquiterpenessubstitutional

About this list

Words
21 (6 common words)
Common example
antihistamines
Rare example
substitutional
Doubled letters
2
Ending in S
8

Questions

How many 14-letter words matching _____i_____n__ are there?

21. 6 of them are common words.

What is a common example?

ANTIHISTAMINES is among the common words in this set.