The term "Reflex Moro Asymmetric" refers to an involuntary response seen in infants that involves a sudden movement of the arms when startled. It is commonly known as the "Moro reflex". However, there are a few synonyms that can be used to describe this phenomenon. One alternative term is the "startle reflex", as it accurately represents the sudden movement caused by a sudden stimulus. Another synonym is the "Moro startle response", highlighting the instinctive nature of the movement. Lastly, it can be referred to as the "asymmetrical startle reflex", emphasizing the asymmetry in arm movement during this reflex. All these synonyms effectively describe the same involuntary reaction observed in infants.