Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
conturbātor, ōris, m. [conturbo], that brings disorder or ruin (cf. conturbo, II.), poet. for ruinous, expensive, or costly (very rare): aper, Mart. 7, 27, 10: macellus, id. 10, 96, 9.