The word "most ghastly" can be replaced with several other words that convey a similar meaning. Some synonyms for most ghastly are horrifying, gruesome, dreadful, appalling, terrifying, chilling, shocking, eerie, hideous, and repulsive. Whether you are writing a piece of fiction or describing a real-life event, using synonyms for most ghastly can help to paint a vivid picture in the reader's mind. It is always important to choose the right word, and using the appropriate synonym can add depth and nuance to your writing, making it more compelling and engaging. So, whether you want to horrify or amaze your readers, synonyms for most ghastly are essential.