rotten

/ˈrɑtən/
adjective
  1. Decayed or decomposed; in a state of rot.
    • The garbage had become rotten and attracted flies.
    • We had to replace the rotten wooden beams in the basement.
    • The rotten apple smelled terrible.
  2. Very bad, unpleasant, or of poor quality.
    • The weather has been rotten all week, with constant rain.
    • The movie was absolutely rotten; we left after 20 minutes.
    • He's in a rotten mood today because he didn't sleep well.
  3. Morally corrupt or dishonest.
    • She discovered the rotten deal her partner had made behind her back.
    • A rotten system allowed the fraud to continue for years.
    • The rotten politician was caught taking bribes.
Antonyms
adverb
  1. Very much; extremely (used informally for emphasis, often with 'spoiled').
    • That dog is spoiled rotten—it only eats gourmet food.
    • He was treated rotten by his so-called friends.
    • The children were spoiled rotten by their grandparents.