underivative
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Adj. 1. underivative - not derivative or imitative; "a natural underivative poet"
original - being or productive of something fresh and unusual; or being as first made or thought of; "a truly original approach"; "with original music"; "an original mind"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.