Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* languĕfăcĭo, fēci, factum, 3, v. a. [langueo-facio], to make faint, weary, languid: incitare languentes et languefacere excitatos, Cic. Leg. 2, 15, 38.