Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† antarctĭcus, a, um, adj., = ἀνταρκτικός, southern, Hyg. Astr. 1, 6; App. de Mundo, p. 57 (in Varr. L. L. 9, § 24 Müll., written as a Greek word).