Synonyms of archaic

Adjective

1. antediluvian, antiquated, archaic, old (vs. new)

usage: so extremely old as seeming to belong to an earlier period; "a ramshackle antediluvian tenement"; "antediluvian ideas"; "archaic laws"

2. archaic, primitive, early (vs. late)

usage: 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"

Definition and meaning of archaic (Dictionary)