If you use the adjective archaic you are referring to something outmoded, belonging to an earlier period. Rotary phones and cassette players already seem so archaic!

The adjective archaic means something that belongs to an earlier or antiquated time. It can also mean something that is outdated but can still be found in the present and therefore could seem out of place. The word comes from archaic (i.e., ancient) Greek, archaikos, and literally means "from Classical Greek culture," though its meaning has broadened as it's been used in English.

Definitions of archaic
  1. adjective
    so extremely old as seeming to belong to an earlier period
    archaic laws”
    synonyms: antediluvian, antiquated
    of long duration; not new
  2. adjective
    little evolved from or characteristic of an earlier ancestral type
    archaic forms of life”
    synonyms: primitive
    being or occurring at an early stage of development
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