2 : little evolved from or characteristic of an earlier ancestral type; "archaic forms of life"; "primitive mammals"; "the okapi is a short-necked primitive cousin of the giraffe"
3 : belonging to or lasting from times long ago; "age-old customs"; "the antique fear that days would dwindle away to complete darkness"
4 : so extremely old as seeming to belong to an earlier period; "a ramshackle antediluvian tenement"; "antediluvian ideas"; "archaic laws"
