Delirious

wiktionary

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From delirium +‎ -ous; see also Latin delirus(“silly, doting, crazy”)

etymonline

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delirious (adj.)

1703, "wandering in the mind, affected with delirium" (as a result of fever or illness), from stem of delirium + -ous. The earlier adjective was delirous (1650s). Figurative sense of "characterized by or proceeding from wild excitement or exaggerated emotion" is by 1791. Related: Deliriously; deliriousness.