Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
prōdĭtor, ōris, m. [prodo], a betrayer, traitor (class.): cum senatus duces nullos ac pro ducibus proditores haberet, Cic. Sest. 15, 35: proditor patriae, id. Fin. 3, 19, 64; id. Fam. 12, 3, 2: disciplinae, Liv. 2, 59.
Poet., transf.: risus proditor latentis puellae, betraying, treacherous, Hor. C. 1, 9, 21.