1. A method, style, or manner that is old-fashioned and no longer in common use
Writing letters by hand is considered an antiquated form of communication.
Escrever cartas à mão é considerado uma forma antiquada de comunicação.
2. An archaic or obsolete way of expressing something in language
The elderly professor still used antiquated forms of grammar.
O professor idoso ainda usava formas antiquadas de gramática.