Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
in-fēcundĭtas, ātis, f. [infecundus], unfruitfulness (post-Aug.): agrorum, Col. prooem. 1, 1: terrarum, Tac. A. 4, 6: apum, Plin. 11, 16, 16, § 50: bienni, Sall. H. Fragm. 3, 1 Dietsch.