Antiquated means so old-fashioned that it is no longer practical. Antiquated equipment, antiquated rules, hopelessly antiquated.
It is a criticism, which is what separates it from antique — an antique is valuable for its age and something antiquated is a nuisance for it. It attaches to systems, laws and machinery. Note antiquity; and that the Latin antiquus means simply old or former, so the disapproval is entirely an English addition.
1adjectiveantiquatedSo old-fashioned that it is no longer practical.
“The office still uses antiquated computers that take ten minutes to start.”
antiquated is a quality of obsolescence.
Antiquate plus -ed, from Latin antiquus, old or former, from ante, before. Antique, antiquity and ancient come from the same before.
From antiquate + ed.
Etymology from Wiktionary, CC BY-SA