Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
cursim, adv. [curro], quickly, swiftly, hastily, speedily (class.): currere, Plaut. Ps. 1, 3, 124; Afran. ap. Charis. p. 186 P.: hoc cito et cursim est agendum, Plaut. Poen. 3, 1, 64: rapi ad carnuficem, id. ib. 1, 2, 156: agmine acto, Liv. 27, 16, 9: dicere aliena (opp. sensim dicere quod causae prodesset), Cic. Phil. 2, 17, 42: arripere aliquid, id. de Or. 2, 89, 364: pergere ad aliquid, id. Tusc. 5, 5, 13 et saep.