staler

/S T EY1 L ER0/
adjective
  1. 1

    (alcohol) Clear, free of dregs and lees; old and strong.

  2. 2

    No longer fresh, in reference to food, urine, straw, wounds, etc.

  3. 3

    No longer fresh, new, or interesting, in reference to ideas and immaterial things; cliche, hackneyed, dated.

  4. 4

    No longer nubile or suitable for marriage, in reference to people; past one's prime.

  5. 5

    Fallow, in reference to land.

  6. 6

    Unreasonably long in coming, in reference to claims and actions.

    โ€œa stale affidavitโ€

  7. 7

    Taking a long time to change

  8. 8

    Worn out, particularly due to age or over-exertion, in reference to athletes and animals in competition.

  9. 9

    Out of date, unpaid for an unreasonable amount of time, particularly in reference to checks.

  10. 10

    Of data: out of date; not synchronized with the newest copy.

    โ€œThe bug was found to be caused by stale data in the cache.โ€

Antonyms

Source: https://en.wiktionary.org/wiki/stale, https://en.wiktionary.org/wiki/staler