Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
percontātor (percunct-), ōris, m. [percontor], an asker, inquirer, Plaut. Men. 5, 5, 31: percontatorem fugito; nam garrulus idem est, Hor. Ep. 1, 18, 69.