outdated
adj. B2 Upper Intermediate US //ˈaʊtˌdeɪtɪd// UK //aʊtdˈeɪtɪd// out·dat·ed
adj. no longer useful or modern because something newer and better exists.
adj. no longer in use or fashionable; superseded by more recent developments or standards.
That old computer software is completely outdated.
The company struggled to compete because its manufacturing equipment was outdated and inefficient.
While the theory was revolutionary in the nineteenth century, modern genetic research has rendered many of its core assumptions outdated.
From outdate + -ed.
Usage
Often follows a linking verb like 'be', 'become', or 'seem'.