дий

Probably a fossilized imperative of Bulgarian дея (deja, “to do”) with narrowing of the root vowel, analogical to Polish wio from Polish wiać (“to run, to flee”).

A paleo-Balkan origin from a hypothetical Proto-Slavic *diti (“to embark, to act”) is also possible. Potential cognates include Latvian diet (“to dance”). Further akin to dial. Bulgarian дойна (dojna, “slowly accelerating dance”), Romanian doină (“type of dance”), Lithuanian dainà (“folk song”) and Proto-Slavic *dьnь (“day”) (whence originates Bulgarian ден (den)).

• IPA^(key): [dij]

дий • (dij)

1. giddy up (to dragging animal, e.g. horse, donkey, bull)

• дикам (dikam, “to urge, to command to embark”)

• дий in Речник на Българския език (in Bulgarian), by Bulgarian Academy of Sciences
• Georgiev Vl. I., editor (1971), “ди, дий”, in Български етимологичен речник [Bulgarian Etymological Dictionary] (in Bulgarian), volume 1, Sofia: Bulgarian Academy of Sciences, page 380