Excelerate means when someone succeeds at something so quickly, they excelerate. The meaning of Excelerate comes from the combination of the words "Excel" and "Accelerate". Accelerate means "to move faster" or "to gain speed". The word accelerate is especially used to explain when a moving object, e.g., a vehicle, begins to move more quickly or at a faster pace (than planned). Excel means "to be superior to" or "surpass in accomplishment or achievement”. The word Excel is used to explain when someone or something is exceptionally good at or proficient in an activity or subject.