The antonyms for the word "fine-grained" are "coarse," "rough," and "gritty." These words describe a texture that is not smooth or homogeneous. In contrast to fine-grained materials, coarse-grained materials have larger particles and are more porous. Rough surfaces are irregular and uneven, while gritty materials have small, granular particles that can feel rough to the touch. In terms of data analysis, coarse-grained data refers to data that is aggregated and less detailed, while fine-grained data is more specific and in greater detail. Overall, antonyms for "fine-grained" suggest a lack of refinement, sophistication, and complexity.