say it: ahr-KAY-ik
archaic is an adjective meaning "so extremely old as seeming to belong to an earlier period". It carries 2 recorded senses.
so extremely old as seeming to belong to an earlier period
“a ramshackle antediluvian tenement”
“antediluvian ideas”
“archaic laws”
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”
Definitions, synonyms and semantic relations for archaic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.