Sundrily is an adverb that means "unexpectedly" or "abruptly." There are several synonyms that can be used to convey the same meaning, including suddenly, unanticipatedly, immediately, swiftly, instantaneously, unexpectedly, and surprisingly. Each of these words can be used to describe actions or events that happen quickly and without warning. For example, "He left the room suddenly," or "The storm appeared unexpectedly." No matter which word is used, the goal is to convey the sense of surprise or abruptness in the situation being described. Synonyms for sundrily can add variety and depth to writing, making it more engaging and descriptive.