Over-shadowing is a term that refers to something or someone that is being covered, obscured, or concealed by something or someone more dominant or important. Antonyms for this term could be "highlighting," "illuminating," "emphasizing," or "showcasing." If something is being "highlighted," it means that it is being given more prominence and attention, rather than being overshadowed or obscured. "Illuminating" suggests that something is being made clearer, more visible, and more understandable, whereas "emphasizing" means that something very important is being stressed and highlighted. "Showcasing" means that something is being presented or displayed in a manner that highlights its strengths and unique qualities.