1. no longer in use or no longer useful; outdated

Examples

• Many consider handwritten letters obsolete in the digital age.
• The old computer system became obsolete after the software update.
• Typewriters are now largely obsolete in most offices.
• Some argue that physical books will never become obsolete.
• The factory’s obsolete machinery needed to be replaced.
• Traditional film cameras became obsolete with digital photography.
• The company’s obsolete business model led to its decline.