Discursion refers to the act of digression, deviation, or departure from the main topic or subject in writing or speech. The antonyms for this word include focus, concentration, relevancy, coherence, and succinctness. When we focus, we stay on the main topic and avoid moving away from it. Concentration is another antonym that means paying attention to one topic without any distractions or deviations. Relevancy refers to making sure the content is related and applicable to the main topic. Coherence is the opposite of discursion as it refers to being logically and consistently organized. Finally, succinctness means using few words to convey ideas clearly, avoiding unnecessary elaboration or deviation from the point.