Frantic
来自Big Physics
late Middle English frentik, ‘insane, violently mad’, from Old French frenetique (see frenetic).
wiktionary
From Middle English frantik, frentik, from Old French frenetique, from Late Latin phreneticus, alteration of phreniticus, from φρενιτικός(phrenitikós, “mad, suffering from inflammation of the brain”), from φρενῖτις(phrenîtis, “inflammation of the brain”), from φρήν(phrḗn, “the brain”). [1] Doublet of frenetic.
etymonline
frantic (adj.)
mid-14c., "insane," unexplained variant of Middle English frentik (see frenetic). Compare franzy, dialectal form of frenzy. Transferred meaning "affected by wild excitement" is from late 15c. Of the adverbial forms, frantically (1749) is later than franticly (1540s).