Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† ăpŏrĭa, ae, f., = ἀπορἰα, doubt, perplexity, embarrassment, with the idea of confusion, disorder: aporia hominis in cogitatu illius, Vulg. Eccli. 27, 5 (in Cic. Att. 7, 21, 3 al., written as Greek).