The phrase "at the top" can be substituted with several synonyms, depending on the context. Some possible words to use instead of "at the top" are "supreme," "exalted," "highest," and "paramount." These words can be used to indicate the most influential or powerful position in a particular hierarchy or organization. Other synonyms for "at the top" may include "dominant," "preeminent," "topmost," and "peak." These words can suggest a level of achievement or excellence that sets someone or something apart from others. Regardless of the synonym used, the idea of being "at the top" emphasizes a position of importance or distinction.