open2noRebus and acrophony are crucial in the development of ancient invented scripts from Mesopotamia (cuneiform), China, Mesoamerica (Maya), Egypt, and scripts which may have been created through exposure to literate cultures (Anatolian Hieroglyphic and Nahuatl). Yet, these two linguistic mechanisms have been understudied from a terminological, contextual and comparative perspective. This article aims to address issues regarding their definition, development and application in script formation. The scope of our study is all attested writing systems that are largely iconic in their sign repertoire, and whose phonetic values were generated anew based on an underlying language (hence ‘invented’). This allows us to chart how writing systems a...