Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sēmĭ-barbărus, a, um, adj., semibarbarous (post-Aug.): Galli, Suet. Caes. 76: homo, Capitol. Max. 2: urbs Leptis, Hier. adv. Jovin. 1, 48.