S: (n) worrying (the act of moving something by repeated tugs or pushes) "vigorous worrying finally loosened the saw"
Adjective
S: (adj) distressing, distressful, disturbing, perturbing, troubling, worrisome, worrying (causing distress or worry or anxiety) "distressing (or disturbing) news"; "lived in heroic if something distressful isolation"; "a disturbing amount of crime"; "a revelation that was most perturbing"; "a new and troubling thought"; "in a particularly worrisome predicament"; "a worrying situation"; "a worrying time"