antiquated
adj.adj. very old-fashioned and no longer useful or modern. You use this to describe things like old technology or laws that do not fit today's world.
adj. outdated or obsolete; belonging to an earlier period and no longer considered effective or appropriate. Often used to describe systems, machinery, or social attitudes.
The office still uses an antiquated filing system.
Many critics argue that the country's antiquated tax laws need a complete overhaul to reflect the modern digital economy.
The factory struggled to remain competitive while relying on antiquated machinery that required constant maintenance and consumed far more energy than contemporary alternatives.
From antiquate + -ed.
Typically used as an attributive adjective before a noun or predicatively after a linking verb like 'be' or 'become'.