When you're describing something as "brim-full," you're saying that it's overflowing or filled to capacity. But if you're looking for some synonyms, here are a few options: "brimming," "filled to the brim," "jam-packed," "chock-full," "stuffed," "overflowing," "bursting," "teeming," "crammed," "loaded," and "packed." Each of these words carries a slightly different connotation, but they all convey the idea of something being completely full and unable to hold any more. Whether you're describing a jar of pickles or a busy street, one of these synonyms might be just what you need to add a bit of variation and interest to your writing.