noun disturbance.
2. disturb ·vt to turn from a regular or designed course.
3. disturb ·vt to throw into disorder or confusion; to derange; to interrupt the settled state of; to excite from a state of rest.
4. disturb ·vt to agitate the mind of; to deprive of tranquillity; to disquiet; to render uneasy; as, a person is disturbed by receiving an insult, or his mind is disturbed by envy.