Faux-archaic form of the old. / Pseudo-archaic, pertaining to a historically inaccurate invocation of pre-modern times.

Early form of the Spanish language that was spoken on the Iberian Peninsula from the 10th century until roughly the beginning of the 15th century, before a consonantic readjustment gave rise to the evolution of Modern Spanish.

plural of old-timer

The dialect of the Old French language spoken in the north of France during the Middle Ages.

plural of old sweat

(Britain, military slang, chiefly WWI) An experienced soldier. / (Britain, military slang) A veteran soldier or war veteran. / (Britain, slang, figuratively) Someone experienced in his or her field.

The Frankish language.

The historical period of the First Babylonian Dynasty. / The Akkadian language spoken at that time.

The Welsh language as it existed from about 800 until the early twelfth century (when it developed into Middle Welsh), not readily intelligible to modern Welsh speakers.

The Egyptian language as spoken from 2600 to 2000 BC during the Old Kingdom and First Intermediate Period.