The word "stinkeroo" is an informal term used to describe something that is of poor quality or that smells bad. Some synonyms for this word include "stinker," "bad smell," "foul odor," "stinky," "reeking," "odiferous," "fetid," and "malodorous." These words can be used to describe things like rotten food, a decayed animal, a dirty restroom, or a person's body odor. It's important to use these synonyms appropriately and in context to convey the intended message clearly. When using these alternatives, it's important to keep in mind the tone and level of formality in the communication.