Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dĭcācĭtas, ātis, f. [dicax], biting wit, raillery, banter (for syn. cf.: sal, facetiae, cavillatio, lepos, urbanitas): dicacitas sine dubio a dicendo, quod est omni generi commune, ducta est; proprie tamen significat sermonem cum risu aliquos incessentem, Quint. 6, 3, 21; cf. Cic. de Or. 2, 54, 218; 2, 60, 244; id. Or. 26; Quint. 6, 3, 29 al.