delirium


delirium
delirium 1590s, from L. delirium "madness," from deliriare "be crazy, rave," lit. "go off the furrow," a plowing metaphor, from phrase de lire, from de "off, away" (see DE- (Cf. de-)) + lira "furrow, earth thrown up between two furrows," from PIE *leis- "track, furrow."

Etymology dictionary. 2014.

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