verb
To upset physical relationship
To upset mental calm
disturb implies the unsettling of normal mental calm or powers of concentration as by worry, interruption, or interference to disturb one's train of thought; discompose implies the upsetting of one's self-possession her sudden outburst discomposed him; to perturb is to cause to have a troubled or alarmed feeling the bad news perturbed him; agitate suggests the arousal of intense mental or emotional excitement he was so agitated, he could not answer
See disturb in Webster's New World Roget's A-Z Thesaurus II
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