- to break up the quiet or serenity of; agitate (what is quiet or still)
- to upset mentally or emotionally; make uneasy or anxious
- to break up the settled order or orderly working of: to disturb the books on a shelf
- to break in on; interrupt
- to inconvenience: if I call later, will I be disturbing you?
Origin of disturbMiddle English distourben from Old French distourber from Classical Latin disturbare, to drive asunder from dis-, intensive + turbare, to disorder from turba, a crowd, mob: see turbid