Outsmart is a word that means to beat someone using one's intelligence, wit, or cunning. An excellent synonym for outsmart is outwit, which means to use one's intelligence or cleverness to defeat someone else. Another synonym is outmaneuver, which means to gain an advantage over someone by planning or executing clever tactics. Another word that can be used as a synonym for outsmart is trick, which means to deceive someone by using clever tactics. Other synonyms include outthink, outdo, and outperform. Using these words in place of outsmart will add variety to your writing while conveying the same meaning.