The word "chalkier" implies a surface that is covered in a layer of white, powdery residue. Some antonyms for this term include "smooth," "polished," and "glossy." These words suggest a surface that is sleek and even, without any roughness or coarse texture. Alternatively, "colorful," "vibrant," and "mottled" are also antonyms for "chalkier," indicating a surface that is bright and lively, with a range of hues and tones. In general, antonyms for "chalkier" describe surfaces that are clean, bright, and lively, with a polished finish and a range of hues and colors.