Definition of vetust in US English:

vetust

adjective

literary
  • Old, ancient; venerable; old-fashioned.

Origin

Early 17th century; earliest use found in Henry Cockeram (fl. 1623–1658), lexicographer. From classical Latin vetustus having existed for a long time, of great age, ancient, long-established, belonging to the distant past, old-fashioned, primitive, archaic from vetus old + -tus, suffix forming adjectives.

Pronunciation

vetust

/vɪˈtʌst/