The antonyms for the term "sliced up" can refer to the opposite of cutting something into smaller pieces. The term can be replaced with the antonyms like 'whole,' 'intact,' 'undivided,' 'unsplit,' 'unbroken,' 'solid,' or 'unscathed.' The term 'sliced up' mostly describes the fragmented and separated state of something. Conversely, antonyms would signify something being complete or in its original form. For instance, an 'unsliced' loaf of bread would mean that the bread is whole and not sliced into pieces. Similarly, an 'untorn' or 'unbroken' page would signify that it's intact and not crumpled or divided.