Out-of-date

 Out-of-date can be used as:

• An adjective:

  • Meaning: No longer current, modern, or valid.
  • Examples:
    • "This software is out-of-date and no longer compatible with the latest operating system."
    • "The information in this brochure is out-of-date."
    • "Her fashion sense is a bit out-of-date."

• An adverb:

  • Meaning: In a way that is no longer current or valid.
  • Examples:
    • "The data in this report is out-of-date."
    • "His ideas are out-of-date for modern business."

Here are some other ways to express the same idea:

• Obsolete: (More formal) No longer produced or used; out of date.
• Dated: Appearing old-fashioned.
• Antiquated: Very old-fashioned or out of date.
• Past its prime: No longer at its best or most effective.
• Expired: No longer valid (often used for things with a limited lifespan like food or medicine).

I hope this helps! Let me know if you have any other questions.