The phrase "scares stiff" suggests fear and paralysis. Antonyms for this phrase would include terms like bravery, courage, or fearlessness. Other antonyms such as calmness, composure, and confidence would also apply. The opposite of being scared stiff is to be relaxed and in control of one's emotions. Additionally, words such as reassurance, security, and safety would capture the sentiment of feeling comfortable and protected, rather than frightened and paralyzed. By focusing on these positive antonyms, we can shift our attention away from fear and towards a more empowered and confident state of being.