The term "does thoroughly" is often associated with the concept of completeness and high attention to detail. Its antonyms may include half-heartedly, superficially, hastily, cursorily, and negligently. When one performs an action half-heartedly, they do it without enthusiasm or dedication, often resulting in a poor outcome. Superficially suggests a lack of depth or scrutiny, while hastily implies rushing through a task without proper consideration. Additionally, cursorily underscores the importance of not doing something with the necessary attention and care, and negligently suggests carelessness or neglect in completing a task. Overall, using antonyms for "does thoroughly" can highlight a lack of detail and dedication in tasks or actions.