DictionaryarchaicOld and out of use
adjective

archaic

ar-KAY-ik/ɑːrˈkeɪɪk/

Belonging to an earlier time and no longer in general use.

The archaic telephone stands beside a small modern smartphone.

An antique candlestick telephone with a separate earpiece and cloth-covered cord, visibly worn and obsolete in design, stands beside a small modern smartphone for immediate contrast.
Etymology

Arkhaios meant “ancient” or “old-fashioned,” ultimately invoking a beginning or origin. Archaic applies that connection with an earlier age to things that are very old or have fallen out of ordinary use.

In context

getreallanguage21:38
now of course the bhagavad-gita is in sanskrit but he makes his own translation and he's deliberately trying to make this sound archaic because the gita is very old
Archaisms and Old Norse influence in English

More examples

  • The poem uses archaic words like “thou” and “hath.”
  • That archaic law is no longer enforced.
  • We replaced the archaic filing system with a searchable database.

Forms

archaic

archaism noun — An old-fashioned word, expression, or practice.

Similar words

obsolete
Obsolete emphasizes replacement or loss of practical usefulness.
antiquated
Antiquated emphasizes being outdated and unsuitable for current needs.
old-fashioned
Old-fashioned can describe styles still used despite their age.