There are several synonyms for the word "whizest," which means the most skillful or knowledgeable person in a particular area. Some possible synonyms include "expert," "master," "genius," "virtuoso," "guru," "maestro," "wizard," "pro," "savant," "adept," "specialist," and "proficient." Each of these words conveys a slightly different shade of meaning, but all of them suggest a high level of competence, proficiency, or expertise. Whether you're talking about the whizest mathematician, the whizest chef, or the whizest rock climber, there's always someone who stands out as the best of the best in their field.