Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sē-grex, ĕgis (collat. form sēgrĕgus, Aus. Parent. 8, 10), adj. [grex], apart, separate (post-Aug. and mostly poet.): agere vitam segregem, Sen. Ben. 4, 18, 2: segregem, id. Hippol. 1208: civitates situ segreges, Sid. Ep. 9, 3; Prud. Cath. 7, 28: segrege formā, i. e. different, id. Ham. 804: segrege regno, divided, id. ib. 66.