Broccoli rabe, also known as rapini, is a cruciferous vegetable that is commonly used in Italian cuisine. It has a slightly bitter taste and can be sauteed, stir-fried, or steamed. If you are looking for synonyms for broccoli rabe, you can consider other leafy greens such as kale, spinach, or collard greens. Other vegetables that have a bitter taste and work well in Italian dishes are radicchio and endive. You can also use arugula or watercress as substitutes for broccoli rabe when making salads. When looking for a milder taste, you can opt for broccoli or broccolini instead of broccoli rabe.