v.tr.
1. break the rest, calm, or quiet of; interrupt.
2 agitate; worry (your story disturbs me).
3 move from a settled position, disarrange (the papers had been disturbed).
4 (as disturbed adj.) Psychol. emotionally or mentally unstable or abnormal.
Derivatives:
disturber n. disturbing adj. disturbingly adv.
Etymology: ME f. OF desto(u)rber f. L disturbare (as DIS-, turbare f. turba tumult)