The phrase "dilate up on" means to expand or enlarge something in a gradual or progressive manner. There are many synonyms for this term, including "increase," "amplify," "grow," "augment," "swell," "enlarge," "extend," "boost," "escalate," "intensify," and "magnify." These words can be used interchangeably depending on the context in which they are used. For instance, one can say "the company is looking to augment its profits by expanding its product line," or "the balloon began to swell as it filled with air." These synonyms offer a range of options that allow one to express the idea of gradual expansion in a variety of ways.