The phrase "more sideward" is an adverb that describes the directional movement towards the side. However, there are several synonyms that can be used instead to convey a similar meaning. These include words such as "laterally," "sideways," "horizontally," "athwart," and "transversely." By using any one of these words, you can describe sideways movement without specifically using the phrase "more sideward." These synonyms can come in handy when rephrasing your sentences or adding variety to your language. Experiment with different words to convey the same idea in a fresh and interesting way.