When it comes to expressing success and accomplishment, there are a variety of synonyms for the popular phrase "nailing it." Some alternatives include acing it, killing it, crushing it, slaying it, conquering it, mastering it, dominating it, owning it, excelling at it, and hitting the mark. Each of these phrases conveys confidence and excellence in achieving a particular goal or task. Using these synonyms can add variety and excitement in your expressions of success and triumph. So, whether you're acing an exam, dominating a project, or slaying a presentation, these synonyms are sure to make you feel proud and confident in your accomplishments.