When it comes to winter weather, hard frosts can be a common occurrence. But if you're tired of using the same old term to describe those freezing, icy temperatures, there are plenty of synonyms to choose from. Some options include severe frosts, killing frosts, black frosts, and even bitter frosts. While these terms all convey the same idea of below-freezing temperatures and potential damage to plants and crops, they each have their own unique connotations. So if you're looking to add more variety to your winter vocabulary, consider incorporating some of these synonyms for hard frosts into your conversations and writing.