When it comes to expressing the degree of speed or intensity of something, "blazingly" is a great word to use. However, if you feel like using a different word to keep your writing fresh, several synonyms for "blazingly" could help. "Fiercely," "swiftly," "furiously," "expeditiously," or "intensely," could all serve the same purpose as "blazingly." Each of these words conveys a sense of urgency and swiftness, ideal for describing action scenes or fast-moving environments. Additionally, for those who want to add a touch of poetic flair to their writing, words such as "rapidly," "exhilaratingly," or "friskily" could be great options.