Secerning is a verb that means to distinguish or separate something from another. Some antonyms for secerning would be confuse or mix up, instead of making distinctions between objects or types. Other antonyms for secerning could include combining, blending, or merging, as these words imply a merging of two or more things rather than separating them out. Additionally, words like unifying or integrating could be antonyms for secerning, as they suggest bringing together disparate entities to form a cohesive whole. Overall, antonyms for secerning tend to have meanings that oppose the idea of categorization, discrimination, or differentiation.