Bloodcurdlingly is an adverb that is used to describe something that is horrifying, terrifying, or spine-chilling. There are various other synonyms for this word which can be used instead of bloodcurdlingly to make your writing more interesting and impactful. Some of the synonyms for the word bloodcurdlingly include terrifyingly, dreadfully, appallingly, terrifyingly, shockingly, frighteningly, petrifyingly, and spine-chillingly. These words convey a similar meaning and can help you intensify your writing by appealing to the readers' emotions. Whether writing a horror story, a suspenseful thriller or a ghost story, these synonyms for bloodcurdlingly will provide an evocative and powerful description of the event.