Frank breech delivery is a term used in obstetrics to describe the position of the baby during delivery where the feet are closest to the mother's cervix. Some synonyms for frank breech delivery include footling breech, complete breech, and extended breech. These terms describe different variations of breech position, with footling breech referring to a position where one or both feet are further down towards the birth canal, while extended breech refers to a position where the legs are extended straight up towards the head rather than folded at the knees. Understanding these variations in breech position can help healthcare professionals to be better prepared for delivery and ensure the safety of both the mother and the baby during childbirth.