15-Letter Words Matching _____I________M

There are 13 15-letter words that match _____I________M. 2 are common words, such as HUMANITARIANISM and TOTALITARIANISM. A rarer one is HYPERINSULINISM. 1 words contain a doubled letter.

Full list 13

humanitarianismtotalitarianismexperientialismexperimentalismhereditarianismhypopituitarismmajoritarianismubiquitarianismassimilationismenantiomorphismequalitarianismfutilitarianismhyperinsulinism

About this list

Words
13 (2 common words)
Common example
humanitarianism
Rare example
hyperinsulinism
Doubled letters
1
Ending in S
0

Questions

How many 15-letter words matching _____i________m are there?

13. 2 of them are common words.

What is a common example?

HUMANITARIANISM is among the common words in this set.