Lucubratory is an adjective that is used to describe a work or study that has been done through deep and concentrated research. Therefore, the antonyms for lucubratory would be more related to simple, superficial or insufficient knowledge. Words like cursory, shallow, superficial, and unprofessional may be used as antonyms for lucubratory. These words represent a lack of depth or serious consideration, which is the opposite of the lucubratory. Other antonyms for lucubratory include simple and effortless, which do not require significant research or knowledge to complete. To summarize, the opposite of lucubratory is work that is generally more shallow, superficial, and effortless.