The antonyms for the word "did thoroughly" will depend on the context in which the phrase is used. If it refers to completing a task or job, some antonyms could be "did hastily," "did superficially," or "did incompletely." However, if it refers to a more personal action or emotion, antonyms could include "did carelessly," "did lazily," or "did half-heartedly." It's important to note that the opposite of "did thoroughly" may not always be negative, as sometimes a task may not require thoroughness, and in those cases, antonyms could include "did casually," "did simply," or "did minimally.