Secondly, I have an innate fear of things moving simultaneously at a fast pace, probably enhanced by the traumatic childhood experience.

traumatic 是形容词，来自名词 trauma（创伤、精神创伤），加上形容词后缀 -tic 构成，表示"与创伤有关的"或"造成创伤的"。traumatic experience 指"造成心理创伤的经历"。