Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
rūmĭgĕror, āri, v. dep. a. [rumor-gero], to spread reports, to spread or noise abroad, Fest. s. v. rumitant, p. 270 Müll.; Paul. ex Fest. p. 271, 3 ib.: rumigerantium sermones, Schol. Bob. ad Cic. Or. de Aere Alien, 2 Fragm. 7, p. 344 Bait.