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.
perdŏlesco or -dŏlisco, lŭi, 3, v. inch. n. [per-doleo], to feel great pain or grief: nec perdoliscit fligi socios, Att. ap. Non. 110, 31 (Trag. Rel. p. 150 Rib.): suam virtutem irrisui fore perdoluerunt, * Caes. B. C. 2, 15.