Definition from Wiktionary, the free dictionary
- Rhymes: -ɒtən
- Of perishable items, overridden with bacteria and other infectious agents.
- If you leave a bin unattended for a few weeks, the rubbish inside will turn rotten.
- In a state of decay.
- The floors were damaged and the walls were rotten.
- His mouth stank and his teeth were rotten.
- Cruel, mean or immoral.
- That man is a rotten father.
- This rotten policy will create more injustice in this country.
- Bad or terrible.
- Why is the weather always rotten in this city?
- It was a rotten idea to take the boat out today.
- She has the flu and feels rotten.
Usage notes 
- Nouns to which "rotten" is often applied: wood, food, egg, meat, fruit, tomato, apple, banana, milk, vegetable, stuff, tooth, smell, person, kid, bastard, scoundrel, weather.
decayed, gone bad
- To an extreme degree.
- That kid is spoilt rotten.
- The girls fancy him something rotten.
Etymology 1 
Conjugation of rotten (weak)
|present tense||past tense|
|1st person singular||rot||rotte|
|2nd person singular||rot||rotte|
|3rd person singular||rot||rotte|
Derived terms 
Etymology 2