-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)

pelagism
A rarely used term for seasickness.
pentadactylism
The condition of having five digits on each hand and foot.
pentaprism
perfectionism
perissodactylism
The condition of being perissodactyl or having an uneven number of toes or digits on each foot
pessimism
1. A general disposition to look on the dark side and to expect the worst in all things.
2. A tendency to see only the negative or worst aspects of all things and to expect only bad or unpleasant things to happen.
3. A tendency to stress the negative or unfavorable or to take the gloomiest possible view of a situation.
4. The doctrine about evil which is a doctrine that all things become evil or that evil outweighs good in life.
5. A melancholy habit of mind characterized by an inclination to believe that the uncertainties of the present will end badly.

It is considered a common manifestation of depression.

6. The general feeling that things will turn out badly.
phallicism
phallism
phallocentrism
pharyngismus
phenomenalism (s) (noun) (usually no plural)
1. The doctrine that phenomena are the only objects of knowledge or the only form of reality.
2. The view that all things, including human beings, consist simply of the aggregate of their observable, sensory qualities.
3. The doctrine, set forth by David Hume and his successors, that percepts and concepts constitute the sole objects of knowledge, with the objects of perception and the nature of the mind itself remaining unknowable.
philobiblism (s) (noun) (usually no plural)
The collection of books done by devoted book collectors.
philocalism
philoSemitism
A fondness for or attraction to ideas, cultural qualities, etc. that originate with Jews, pro-Jewish; the opposite of antiSemitism.
philotheism (s) (noun), philotheisms (pl)
The love of God.