causing anxiety or concern; unsettling

his whereabouts remain a perturbing mystery

there were two scenes that I think would be perturbing to small children

make (someone) anxious or unsettled

they were perturbed by her capricious behaviour

he was perturbed that his bleeper wouldn't work

subject (a system, moving object, or process) to an influence tending to alter its normal or regular state or path

nuclear weapons could be used to perturb the orbit of an asteroid