Blood-curdling is an expression that describes something that is extremely frightening or terrifying. It brings to mind images of horror movies and suspenseful scenes. However, if you are looking for synonyms for this phrase, there are plenty of options available. Some alternatives may include spine-chilling, hair-raising, bone-chilling, heart-stopping, nail-biting, or goosebumps-inducing. These terms can be used to add excitement and drama to any story or situation. Whether you are a writer looking for a way to spice up your prose or someone simply looking for new words to add to your vocabulary, these synonyms for blood-curdling will surely fuel your creativity.