Nosh-up is a commonly used term to describe a hearty meal or a large feast. However, there are several synonyms that can be used in its place. Some of the most common alternatives include banquet, feast, spread, repast, and potluck. These words are often used to describe a large gathering of people, where food is served in abundance. Other synonyms for nosh-up include dinner party, gala, celebration, and reception. Each of these terms has a slightly different connotation, but they all share the same idea of a plentiful and enjoyable meal. Whether you're planning a formal event or a casual get-together, these synonyms for nosh-up are sure to come in handy.