Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
in-deflexus, a, um, adj., unbent, unchanged (post-Aug.): maturitas, Plin. Pan. 4, 7: cursus, App. de Deo Socr. p. 42, 16: saevitia, Amm. 27, 9.