ism (n.)

word-forming element making nouns implying a practice, system, doctrine, etc., from French -isme or directly from Latin -isma, -ismus (source also of Italian, Spanish -ismo, Dutch, German -ismus), from Greek -ismos, noun ending signifying the practice or teaching of a thing, from the stem of verbs in -izein, a verb-forming element denoting the doing of the noun or adjective to which it is attached. For distinction of use, see -ity. The related Greek suffix -isma(t)- affects some forms.

1748, "philosophy that nothing exists except matter" (from French matérialisme); see material (n.) + ism. As this naturally tended toward "opinion or tendency based upon purely material interests," it came to be used by late 19c. for any low view of life (opposed to idealism). As "a way of life based entirely on consumer goods," by 1930.