英和和英

語源

Classically derived from fārī, as is nefārius. A feminine adverbial accusative from a lost adjective, *bifārius. According to Michael Weiss, from Proto-Italic *dwiðāzios, from Proto-Indo-European *dwi-dʰh₁o- (“rendered in two, bipartite”) (see tribus and Sanskrit multiplicatives in -धा (-dhā) such as Sanskrit द्विधा (dvidhā, “twofold”)) + Proto-Italic *-āzios (Latin -ārius). To account for the word-internal f which would not arise from Proto Italic *ð before a and after i, as for īnferus with *en, the word is assumed to be, by metanalysis, a compound with *dwi-. Compare also Ancient Greek διφάσιος (diphásios, “two-fold, of two kind, double”), regarded by some as the etymon of, or cognate with, bifāriam.

The adjective bifārius is later attested in Ammianus Marcellinus (330-391/400 AD) as a back-formation.