Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* succusso (subc-), āre, v. freq. a. [succutio], to shake or jerk up and down, to jolt (as a hard-going horse does his rider), Att. ap. Non. 16, 29 (Trag. Rel. 568 Rib.).