Horripilations refer to a sudden sensation of feeling anxious or fearful. There are many different words that can be used to express this feeling. Some synonyms include goosebumps, shivers, shudders, chills, quivers, trembles, and palpitations. All of these words can be used to describe that sudden feeling of unease that can wash over an individual in frightening or unsettling situations. It is important to choose the right word to convey the correct emotions and nuances in various situations. Using the right synonyms for horripilations can help writers create a more vivid and engaging story by conveying the emotions of their characters more effectively.