Enlarging upon means to expand or elaborate on a topic or idea. Its antonyms are words that convey the opposite meaning or concept, such as curtailing, abbreviating, or shortening. Curtailing upon means to limit or reduce information or detail, while abbreviating upon means to make shorter or summarize. Similarly, shortening upon means to condense or cut down on the elaboration of a topic or concept. Other antonyms for enlarging upon include simplifying, attenuating, and decreasing, which all suggest a reduction in size, complexity, or extent. Therefore, when discussing a topic, it is important to consider the appropriate balance between elaboration and clarity to convey the intended message effectively.