Derivative is a term used to describe something that is derived from another source. OUTGROWTH, an 8-letter word, is a term used to describe something that has grown or developed from something else. OFFSHOOT, also an 8-letter word, is a term used to describe something that has branched off from a larger source. IMITATIVE, a 9-letter word, is a term used to describe something that is modeled after or copied from another source. DERIVATION, a 10-letter word, is a term used to describe the process of deriving something from another source. DESCENDANT, also a 10-letter word, is a term used to describe something that is descended from a common ancestor. SECONDARY, a 9-letter word, is a term used to describe something that is not primary or original. UNORIGINAL, a 10-letter word, is a term used to describe something that is not original or creative.