Mark out is a versatile term that has various synonyms based on its context and application. In sports, the equivalent to mark out is line up or draw up, which refers to the strategic ordering of players or the delineation of field boundaries. In construction and engineering, the equivalent could be plotting, which refers to mapping out a blueprint or designing the layout of a structure. Alternatively, for marking a person for criticism or rebuke, call out or point out is the equivalent. When it comes to distinguishing or differentiating, set apart or differentiate are the appropriate synonyms for mark out. Finally, one can demarcate a boundary or a limit, which reflects the same sense as marking out.