Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
rŭbĕ-făcĭo, fēci, factum, 3, v. a. [rubeo], to make red or ruddy, to redden (poet.): sanguine setas, Ov. M. 8, 383: rubefactaque sanguine tellus, id. ib. 13, 394: cornua multo cruore, id. ib. 12, 382: ora sororum (Aurora), Sil. 16, 137.