Defn: Of or characterized by antiquity or archaism; antiquated; obsolescent.
ARCHAICAL
Ar*cha"ic*al, a.
Defn: Archaic. [R.] — Ar*cha"ic*al*ly, adv.
ARCHAISM
Ar"cha*ism, n. Etym: [Gr. archaïsme. See Arch, a.]
1. An ancient, antiquated, or old-fashioned, word, expression, or idiom; a word or form of speech no longer in common use.
2. Antiquity of style or use; obsoleteness. A select vocabulary corresponding (in point of archaism and remoteness from ordinary use) to our Scriptural vocabulary. De Quincey.
ARCHAIST
Ar"cha*ist, n.
1. Am antiquary.
2. One who uses archaisms.
ARCHAISTIC
Ar`cha*is"tic, a.