archaistic /ɑːkeɪˈɪstɪk/adjective 1noun 1forms 2 adjective1 •Pertaining to an archaist; deliberately archaic, old-fashioned in an affected way. noun1 •Archaistic themes, motifs, items, etc.As in the case of Renaissance Italy, it is precisely the presence of the archaistic in the modern that is so fascinating to the cultural historian. — 1981 formsmore archaistic · most archaistic