deliration

[del-uh-rey-shuh n] /ˌdɛl əˈreɪ ʃən/
noun, Archaic.
1.
mental derangement; raving; delirium.
Origin
1590-1600; < Latin dēlīrātiōn- (stem of dēlīrātiō) folly, equivalent to dēlīr(āre) to be silly, literally, go out of the furrow (dē- de- + līr(a) furrow + -āre infinitive ending) + -ātiōn- -ation