Superficial is a word that expresses the idea of being shallow or surface-level, and there are plenty of synonyms that convey this sense. Some common synonyms for superficial include cursory, shallow, skin-deep, and surface-level. Other options include trivial, flimsy, facade, and insubstantial. These synonyms all describe something that is superficial or lacking in depth, whether it's a person, an idea, or an aspect of a situation. Superficiality can be frustrating or unappealing, but it's a common aspect of modern life, and having a range of synonyms for superficial can help us communicate our feelings about it more effectively.