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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"
References in periodicals archive ?
This paper names the two kinds of account of causation and temporal precedence derivative and underivative accounts.
Underivative Duty--British Moral Philosophers from Sidgwick to Ewing.
in MORAL OBLIGATION: ESSAYS AND LECTURES 1, 7 (1949) ("The sense of obligation to do, or of the rightness of, an action of a particular kind is absolutely underivative or immediate.