Wiktionary
n. A philosophical movement formed as a cultural reaction against positivism in the early 20th century.
Usage examples of "irrationalism".
As a result, the world of the paranormal may appear less as a silly turn toward irrationalism and more as an idiom through which segments of society express their conflicts, dilemmas, and identities.
Our first and most pressing need, therefore, before we can begin to gently guide our evolutionary destiny, before we can build a humane future, is to halt the runaway acceleration that is subjecting multitudes to the threat of future shock while, at the very same moment, intensifying all the problems they must deal with--war, ecological incursions, racism, the obscene contrast between rich and poor, the revolt of the young, and the rise of a potentially deadly mass irrationalism.