Antiquated, a.
Grown old. Hence: Bygone; obsolete; out of use; old-fashioned; as, an antiquated law. "Antiquated words." Dryden. Old Janet, for so he understood his antiquated attendant was denominated. Sir W. Scott.
Syn. -- Ancient; old; antique; obsolete. See Ancient.
Shades of meaning
Fernald has no entry of its own for antiquated; he lists it under antique, obsolete, old.
Where he writes about it:
Antique refers to an ancient, antiquated to a discarded style. — from antique
The difference between antiquated and antique is not in the age, for a Puritan style may be scorned as antiquated, while a Roman or Renaissance style may be prized as antique. — from antique
The antiquated is not so much out of date as out of vogue. — from antique
In the latter case it becomes a synonym for antiquated; in the good sense it approaches the meaning of antique, but indicates less duration. — from antique
Antiquated is sometimes used of persons in a sense akin to superannuated. — from antique
The antiquated person is out of style and out of sympathy with the present generation by reason of age; the superannuated person is incapacitated for present activities by reason of age. — from antique