Tubularly is defined as something that is shaped like a tube or having qualities of a tube. There are several synonyms for the word, including cylindrical, round, elongated, tube-shaped, cylindrical-shaped, pipe-like, and tunnel-like. Each word describes something that is long and cylindrical in shape, and they can be used interchangeably depending on the context. For instance, a tube-shaped structure can be called tunnel-like if it's underground while a pipe-like structure is used for conveying fluid. These synonyms can help you to vary your vocabulary and make your writing more descriptive, interesting, and engaging.