plagiaristic — an act or instance of using or closely imitating the language and thoughts of another author without authorization and the representation of that author's work as one's own, as by not crediting the original author: It is said that he plagiarized Thoreau's plagiarism of a line written by Montaigne. Synonyms: appropriation, infringement, piracy, counterfeiting; theft, borrowing, cribbing, passing off.
matured — complete in natural growth or development, as plant and animal forms: a mature rose bush.
derivative — A derivative is something which has been developed or obtained from something else.
