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outburst

[out-burst]
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noun
  1. a sudden and violent release or outpouring: an outburst of tears.
  2. a sudden spell of activity, energy, etc.
  3. a public disturbance; riot; outbreak.
  4. a bursting forth; eruption.
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Origin of outburst

First recorded in 1650–60; out- + burst
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for outburst

outburst

noun
  1. a sudden and violent expression of emotion
  2. an explosion or eruption
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for outburst

n.

1650s, from out + burst (v.). Outbresten was a verb in Middle English (mid-12c.), from Old English utaberstan.

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Online Etymology Dictionary, © 2010 Douglas Harper