Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
per-dŏlĕo, ŭi, ìtum, 2, v. n., to pain or grieve greatly (ante-class.): id perdolitum est T. Manlio, Q. Claud. ap. Gell. 9, 13, 13: tandem perdoluit, Ter. Eun. 1, 2, 74.