The phrase "sets up on" doesn't have a direct antonym, but there are several phrases that can be used as alternatives. Antonyms for "sets up" include "tears down," "dismantles," and "deconstructs." Depending on the context, other antonyms may apply, such as "neglects," "ignores," or "abandons," if the activities refer to tasks that should be performed but are not. Conversely, antonyms for "on" are "off," "down," and "inactive," among other options. Understanding different antonyms can help clarify the meaning of a phrase and provide alternative phrasing or vocabulary.