the.com/archaic
So old it stopped being useful and started being charming.
means Belonging to an earlier time, now outdated, old-fashioned, or no longer in everyday use.
from From Greek arkhaikos, meaning old-fashioned, rooted in arkhe, the beginning of things.
Word stageMarks language sliding from quaint toward extinct.
Greek artArchaic period predates the Classical golden age.
Not obsoleteArchaic words linger; obsolete ones are gone.