unoriginalPronunciation: /ʌnəˈrɪdʒɪn(ə)l/Translate unoriginal | into Spanish Definition of unoriginal adjective lacking originality; derivative:an uninteresting and unoriginal essayDerivatives unoriginalityPronunciation: /-ˈnalɪti/ noun unoriginally adverb unoriginal in other Oxford dictionaries Definition of unoriginal in the US English dictionary