Fight back Definition 1 of 3Pro Tip 1/3Physical Defense Used when someone actively resists physical attack or pressure. He learned martial arts to fight back if attacked. Pro Tip 2/3Standing Ground Suggests not retreating or showing weakness in the face of adversity. Despite the threats, the community fought back to protect their homes. Pro Tip 3/3Unexpected Resistance Implies a surprising or strong opposition to what was thought to be a weaker party. Outnumbered, the troops fought back with unexpected ferocity.