Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
narrātor, ōris, m. [narro], a relater, narrator, historian (class.): narratores faceti, Cic. de Or. 2, 54, 219: rerum, id. ib. 2, 12, 54: disertus rerum suarum, Quint. 11, 1, 36: a narratoribus oratoribusque praecipua materia in laudem principis adsumta est, Tac. A. 16, 2.