"Bumpier" refers to something that is not smooth and has a rough texture or surface. When looking for synonyms for "bumpier", several words can be used to convey the same meaning. Words such as "rougher", "uneven" or "rockier" are suitable alternatives. These words encompass the idea of a surface that is not level, resulting in a more turbulent experience. Another useful synonym could be "jagged", highlighting the presence of angular or sharp edges. Similarly, "rutted" can describe a surface marked by deep tracks or grooves. These synonyms effectively convey the concept of a bumpy texture or terrain, enabling a diverse range of expressions and descriptions within a given context.