made-up \made-up\ adj. 1. formed or conceived by the imagination; not true; as, a made-up story. Syn: fabricated, fancied, fictional, fictitious, invented. [WordNet 1.5] 2. having been paved. [British] [WordNet 1.5] 3. marked by the use of cosmetic makeup; as, heavily made-up eyes. [WordNet 1.5] 4. formed by fitting or joining components together. Syn: assembled, built(prenominal). [WordNet 1.5]