Newfangleness refers to a desire for novelty or change, but if you're looking for other words to express this concept, you might try using terms like innovation, novelty, or experimentation. Alternatively, you could use words like unorthodoxy, unconventionality, or nonconformity to describe a similar desire for novelty or deviation from established norms. Other synonyms for newfangleness might include modernity, trendiness, or vogue, which suggest a kind of fashionable or cutting-edge quality. Ultimately, the word you choose will depend on the context in which you're using it, but all of these options capture some aspect of the restless desire for something new and exciting.