Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† hypallăgē, ēs, f., = ὑπαλλαγή, a rhetorical figure, by which the relations of things seem to be mutually interchanged (as: dare classibus austros instead of classes austris), Serv. ad Verg. A. 3, 61.