There are several synonyms for the word "diagrammatics" that can be used to refer to the study of diagrams. One of the most common alternatives is "diagrammatical analysis," which emphasizes the process of analyzing and interpreting diagrams to extract insights and information. Another synonym is "graphical representation," which emphasizes the role of diagrams in representing complex data in a visual and intuitive way. Other synonyms include "diagramming," "schematic representation," "visual mapping," and "charting." Overall, these different synonyms capture different aspects of the study of diagrams, emphasizing the different ways in which diagrams can be analyzed, understood, and utilized in various disciplines and applications.