Postmodernism describes a broad movement that developed in the mid to late 20th century across philosophy, the arts, architecture, and criticism which marked a departure from modernism. While encompassing a broad range of ideas, postmodernism is typically defined by an attitude of skepticism, irony, or distrust toward grand narratives, ideologies, and various tenets of Enlightenment rationality, including notions of human nature, progress, objective reality and morality, absolute truth, and reason. Instead, it asserts that claims to knowledge and truth are products of unique social, historical, or political discourses and interpretations, and are therefore contextual and constructed to varying degrees. Accordingly, postmodern thought is broadly characterized by tendencies to epistemological and moral relativism, pluralism, irreverance, and self-referentiality.
The term postmodernism has been applied both to the era following modernity, and to a host of movements within that era (mainly in art, music, and literature) that reacted against tendencies in modernism. Postmodernism includes skeptical critical interpretations of culture, literature, art, philosophy, history, linguistics, economics, architecture, fiction, and literary criticism. Postmodernism is often associated with schools of thought such as deconstruction and post-structuralism, as well as philosophers such as Jean-François Lyotard and Frederic Jameson.