Snippily is an adverb used to describe someone who speaks or acts impatiently or in a curt, sharp manner. There are several synonyms that can be used to convey a similar meaning, such as brusquely, tartly, testily, prickly, irritably, and impatiently. Each of these words emphasizes a different aspect of snippiness, from a lack of warmth or kindness to a sense of annoyance or frustration. While they all suggest a similar negative tone, they can also be used in different contexts to convey specific nuances of meaning. So, next time when you want to describe someone's snippiness, consider using one of these synonyms to add more depth and specificity to your writing.