verb (used with object)
to interrupt the quiet, rest, peace, or order of; unsettle.
to interfere with; interrupt; hinder: Please do not disturb me when I'm working.
to interfere with the arrangement, order, or harmony of; disarrange: to disturb the papers on her desk.
to perplex; trouble: to be disturbed by strange behavior.
verb (used without object)
to cause disturbance to someone's sleep, rest, etc.: Do not disturb.

1175–1225; Middle English disto(u)rben, disturben < Anglo-French disto(u)rber, desturber < Latin disturbāre to demolish, upset, equivalent to dis- dis-1 + turbāre to confuse

disturber, noun
predisturb, verb (used with object)

1. bother, annoy, trouble, pester.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
disturb (dɪˈstɜːb)
1.  to intrude on; interrupt
2.  to destroy or interrupt the quietness or peace of
3.  to disarrange; muddle
4.  (often passive) to upset or agitate; trouble: I am disturbed at your bad news
5.  to inconvenience; put out: don't disturb yourself on my account
[C13: from Latin disturbāre, from dis-1 + turbāre to confuse]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

early 13c., from L. disturbare "throw into disorder," from dis- "completely" + turbare "to disorder, disturb," from turba "turmoil." Disturbed "emotionally or mentally unstable" is from 1904. Related: Disturbing.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
What the book biz wants is words that won't disturb, outrage or frighten.
None of the other five crewmen were stirring, so as not to disturb the
  experiment with any vibrations.
Officer responded and asked him to speak at a lower volume and not disturb
Critics say this might disturb the toxic sediment lying on the lake bottom,
  while ice scouring might rupture the pipe.
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