The antonyms for the word "more splintery" are "smoother," "softer," "polished," "refined," and "even." These words describe the opposite of rough, jagged, and uneven surfaces that are associated with splinters. A smooth surface is free from any bumps and roughness and therefore provides a comfortable feeling. In contrast, a splintery surface can be painful and dangerous. A polished surface is smooth and shiny, reflecting light and adding a sense of elegance to an object. These antonyms show that there is a spectrum of various textures, which evoke different sensations and emotions.