"Man down" is a commonly used phrase to refer to someone who is injured, incapacitated, or in need of assistance. However, there are several suitable synonyms that can be used to express the same meaning. One alternative phrase is "person injured", which is a gender-neutral term. Another synonym could be "individual in distress", emphasizing the need for immediate help. "Person incapacitated" is also an acceptable synonym, indicating someone who is unable to function properly. Additionally, "individual in need" conveys the urgency of the situation without specifying the cause. Having various synonyms for "man down" allows for more inclusive and precise expressions when describing emergency situations.