Relativism (noun)

1. The theory, especially in ethics or aesthetics, that concepts of value are not absolute but are relative to the persons or groups holding them.
2. The doctrine that knowledge, truth, and morality exist in relation to culture, society, or historical context, and are not absolute.

Origin:

Late 19th century: from relative + -ism.

Examples:

1. Many opponents of moral relativism believe that it leads to a decline in ethical standards.
2. Cultural relativism holds that the truth or falsehood of moral judgments is relative to the culture in which they are made.
3. Relativism suggests that there is no single truth but only many and different perspectives.
4. Critics of relativism argue that it provides no basis for making moral or ethical decisions.
5. Relativism is often associated with the postmodern movement in philosophy.