Cubically is an adverb that describes a shape that is cubic or resembling a cube. There are several synonyms for the word cubically, including cuboidally, rectangularly, and boxily. These words can be used interchangeably to describe shapes that are characterized by flat sides, sharp angles, and straight lines. Additionally, other synonyms like squarely, quadratically, and orthogonally can also be used to describe the shape of a cube or something that is cubical in nature. These synonyms are useful when you need to describe a specific shape or object in detail and create a more vivid image in the reader's mind.