* Alphabetical: If you're talking about writing systems, "alphabetical" is the most common opposite of "cuneiform" as it describes a system using an alphabet.
* Hieroglyphic: This refers to another ancient writing system, often depicted as stylized pictures, which contrasts with cuneiform's wedge-shaped symbols.
* Logographic: This refers to a writing system where symbols represent whole words, contrasting with cuneiform's more complex syllabic system.
* Modern: If you're discussing the time period, "modern" can be an opposite, as cuneiform is an ancient form of writing.
Ultimately, the best antonym depends on the specific situation and what aspect of cuneiform you want to contrast.