rottener

/R AA1 T AH0 N ER0/
adjective
  1. 1

    Of perishable items, overridden with bacteria and other infectious agents.

    โ€œIf you leave a bin unattended for a few weeks, the rubbish inside will turn rotten.โ€

  2. 2

    In a state of decay.

    โ€œHis mouth stank and his teeth were rotten.โ€

  3. 3

    Cruel, mean or immoral.

    โ€œThat man is a rotten father.โ€

  4. 4

    Bad or terrible.

    โ€œIt was a rotten idea to take the boat out today.โ€

Source: https://en.wiktionary.org/wiki/rotten, https://en.wiktionary.org/wiki/rottener