The word "snicker" means to laugh in a derisive, sneering or covert manner. Some synonyms for "most snicker" include "most derisive," "most sneering," "most contemptuous," "most mocking," and "most sarcastic." Other potential options might include "most scornful," "most disdainful," "most jeering," or "most taunting." While each of these terms has a slight nuance in meaning, they all convey a sense of a laughter that is meant to belittle or insult others in some way. When looking for the right word to capture the essence of "most snicker," it's important to consider the specific context and tone of the laugh in question.