Greaseproof is a term that is often used to describe materials or products that have the ability to repel or resist grease, oil, and other oily substances. However, when you're looking to spice up your writing or add some variety to your vocabulary, it's important to have a few synonyms for greaseproof at your disposal. Some possible replacements for greaseproof include waterproof, oil-resistant, non-stick, and hydrophobic. Other options might include terms like stain-resistant, repellant, or even slick-proof, depending on the context and the precise meaning that you're trying to convey. By having a few different synonyms for greaseproof, you can expand your writing and convey your message more effectively.