archaic

IPA: ɑrkˈeɪɪk

(archaeology, US, usually capitalized) The prehistoric period intermediate between the earliest period (‘Paleo-Indian’, ‘Paleo-American’, ‘American‐paleolithic’, etc.) of human presence in the Western Hemisphere, and the most recent prehistoric period (‘Woodland’, etc.).
(paleoanthropology) (A member of) an archaic variety of Homo sapiens.

Of or characterized by antiquity; old-fashioned, quaint, antiquated.
(chiefly lexicography, of words) No longer in ordinary use, though still used occasionally to give a sense of antiquity and are still likely to be understood by well-educated speakers and are found in historical texts.
(archaeology) Belonging to the archaic period.

Examples of "archaic" in Sentences

Those who oppose zoning will call it archaic, divisive, and unfair.
It doesn't stop you from using solid rocket motors or engines designed in archaic units.
LAVANDERA: Stay-at-home mother Melissa Pierce is leading the charge to end what she calls archaic alcohol laws.
He looks up to see a man in archaic clothing stumbling down a hill, clearly being chased by vague, dark figures.
One thing I was reminded of this weekend is that historic quotes in archaic language that Quakers use ... sometimes overuse .. were once contemporary language.
With widespread illegal gambling activity, a group of Bahamians want what they call the archaic, undemocratic gaming laws in the country to be changed to afford them the right to gamble in their own country.
The forms of thou are termed archaic by Merriam-Webster's Third New International Dictionary of the English Language Unabridged: "In this dictionary, the label archaic is affixed to words and senses relatively common in earlier times but infrequently used in present-day English."