Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
concĭtātrix, īcis, f. [concitator], that which excites or stirs up (very rare): Veneris (eruca), Plin. 19, 8, 44, § 154; and adj.: concitatricem vim habet satyrion, id. 26, 10, 62, § 96.