Meaning

adjective excessively agitated; distraught with fear or other violent emotion

originFrom Middle English frenetik (also frentik, frentyk, frantike > modern English frantic), from Old French frenetike, from Latin phreneticus, from Ancient Greek φρενητικός (phrenētikós, “delirious”), from φρενῖτις (phrenîtis, “delirium”), from φρήν (phrḗn, “mind”). Doublet of frantic and phrenitic. Etymologically, initial stress would be expected (compare the syncopic form phrentic); the modern…

Etymology from Wiktionary, CC BY-SA 3.0