The word "clunky" is commonly used to describe something that is heavy, awkwardly shaped or difficult to operate. However, there are several synonyms that can be used to convey a similar meaning. For example, the word "cumbersome" can be used to describe something that is difficult to move or handle due to its size or weight. Additionally, "awkward" can be used to describe something that is uncomfortable or difficult to use due to its design or construction. Lastly, "unwieldy" can be used to describe something that is difficult to manage or control due to its size, shape or weight. By using these synonyms, one can effectively communicate their intended meaning while avoiding repetitive language.