adj. 25B6; adjective
medieval times : OF THE MIDDLE AGES, of the Dark Ages, Dark-Age; Gothic.
(informal) the plumbing's a bit medieval : PRIMITIVE, antiquated, archaic, antique, antediluvian, old-fashioned, out of date, outdated, outmoded, anachronistic, passé, obsolete; informal out of the ark; N. Amer. informal horse-and-buggy, clunky.
modern.