Antonyms for the phrase "having relation to" include detachment, separation, disconnection, indifference, and irrelevance. When something has no relation to another thing, it exists independently of it, without any influence or connection. Similarly, when two things are disconnected, they are not related or valuable to each other. Indifference suggests a lack of interest or concern about something, while irrelevance means that something has no relevance or significance to a certain context or topic. In contrast, having a relation to something implies that it is connected, associated, or relevant to it in some way, which can be important for understanding or interpreting a particular topic or concept.