antiquated
Meaning: old, out of date
Usage: That antiquated car has none of the features, like power windows and steering, that make modern cars so great.
archaic
Meaning: of or relating to an earlier period in time, outdated
Usage: In a few select regions of western Mongolia, an archaic Chinese dialect is still spoken.
antediluvian
Meaning: ancient
Usage: The antediluvian man still believed that Eisenhower was president of the United States and that hot dogs cost a nickel.