What is another word for rottenly?
Pronunciation: [ɹˈɒtənli] (IPA) 
There are numerous synonyms for the word "rottenly," which refers to something that is in a state of decay or is spoiled. Some synonyms for this term include putridly, decomposedly, rancidly, spoiledly, fetidly, and foully. These words can be used interchangeably to describe something that is unpleasantly smelly, discolored or has a bad taste. For example, one might describe a spoiled piece of fruit as having a putrid aroma, while a decaying animal might be referred to as smelling foully. Regardless of the term used, these words are often associated with disgust, and are commonly used to describe unpleasant smells and tastes associated with decaying organic matter.
