Synonyms:
archaic, primitive
Meaning: 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"
Synonyms:
antediluvian, antiquated, archaic
Meaning: so extremely old as seeming to belong to an earlier period; "a ramshackle antediluvian tenement"; "antediluvian ideas"; "archaic laws"
Usage examples
I suppose it sounds archaic, but I cannot help thinking that the people with motor boats miss a great deal.
The most immediate and unequivocal expression of that archaic human nature which characterizes man in the predatory stage is the fighting propensity proper.
The evidence we have, so far as it goes, tends to show that the South American fauna always has been more archaic in type than the arctogeal fauna of the same chronological level.