-ism, -ismus

(Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait)

inflationism (s) (noun) (usually used in the singular)
The advocacy, or policy, of deliberately causing economic increases in the supply of available currency and credit: "Inflationism is policy or belief that encourages an increase in the level of consumer prices or a decline in the purchasing power of money which is caused by more available money and credit beyond the amount of available goods and services."
infusionism (s) (noun), infusionisms (pl)
In theology, the doctrine that the human soul emanates from the divine substance, and is infused into the body at conception or birth.
insularism
insulism
intellectualism
internationalism (s) (noun), internationalisms (pl)
Multiple countries working together on common issues: Internationalism can be a political movement that advocates greater economic and political cooperation among nations.
intuitionalism (s) (noun), intuitionalisms (pl)
The doctrine that the perception or recognition of primary truth is direct and immediate without the need for any facts.
invalidism
iodism
Poisoning from th chronic ingestion of iodine or its compounds, or from intensive, repeated therapy.
iotacism (s) (noun), iotacisms (pl)
1. The tendency in speakers of modern Greek to use the sound of iota in place of the sound of other vowel characters; such as, "eta" or "upsilon".
2. The practice in modern Greek of giving the pronunciation of iota "ee" to certain diphthongs and long vowels.
irrationalism
isocephalism
isodactylism
A condition of having fingers (or toes) of equal length.
isolationism (s) (noun)
A government policy based on the belief that national interests are best served by avoiding economic and political alliances with other countries.
isomerism
1. Repetition of similar parts.
2. The condition of having two or more comparable parts made up of identical numbers of similar segments.