Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
fāmĭgĕrātĭo, ōnis, f. [famigeratus].
Prop., tale-bearing.
Hence, concr., a report, rumor: haec famigeratio Te honestet, Plaut. Trin. 3, 2, 66.