1) Confusion 2) Disorder 3) Insanity 4) Irrationality 5) Lack of reason or sanity 6) Madness 7) The state of being irrational Found on https://www.crosswordclues.com/clue/unreason
inability or unwillingness to think or act rationally, reasonably, or sensibly; irrationality. · lack of reason or sanity; madness; confusion; disorder; chaos: a world torn by unreason. Found on https://www.infoplease.com/dictionary/unreason