Heathenism (noun)

1. The state or quality of being a heathen, or a person who does not follow the monotheistic religions.
2. The practices or beliefs of heathens, or people who do not follow the monotheistic religions.

Origin:

From the middle english word "heathen", which is derived from old english "hæðen" which means "pagan", "heathen" refers to a person who does not follow the monotheistic religions like christianity, judaism, or islam.

Examples:

1. The missionary's goal was to convert the heathenism of the native people to Christianity.
2. Heathenism was viewed as primitive and inferior by the monotheistic religions.
3. Some people practice heathenism as a modern reconstruction of ancient polytheistic religions.
4. The historian studied the heathenism of the Viking Age as a part of his research.
5. The term "heathenism" is considered offensive and pejorative by many people who practice these religions.