-ism
/ɪz(ə)m/suffix
Forming nouns:
1Denoting an action or its result: baptism exorcism
1.1Denoting a state or quality: barbarism
2Denoting a system, principle, or ideological movement: Anglicanism feminism hedonism
2.1Denoting a basis for prejudice or discrimination: racism
3Denoting a peculiarity in language: colloquialism Americanism
4Denoting a pathological condition: alcoholism
Origin
From French -isme, via Latin from Greek -ismos, -isma.