surprisal

[ser-prahy-zuhl]
noun
1.
the act of surprising.
2.
the state of being surprised.
3.

Origin:
1585–95; surprise + -al2

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
surprise (səˈpraɪz)
 
vb
1.  to cause to feel amazement or wonder
2.  to encounter or discover unexpectedly or suddenly
3.  to capture or assault suddenly and without warning
4.  to present with something unexpected, such as a gift
5.  (foll by into) to provoke (someone) to unintended action by a trick, etc: to surprise a person into an indiscretion
6.  (often foll by from) to elicit by unexpected behaviour or by a trick: to surprise information from a prisoner
 
n
7.  the act or an instance of surprising; the act of taking unawares
8.  a sudden or unexpected event, gift, etc
9.  the feeling or condition of being surprised; astonishment
10.  (modifier) causing, characterized by, or relying upon surprise: a surprise move
11.  take by surprise
 a.  to come upon suddenly and without warning
 b.  to capture unexpectedly or catch unprepared
 c.  to astonish; amaze
 
[C15: from Old French, from surprendre to overtake, from sur-1 + prendre from Latin prehendere to grasp; see prehensile]
 
sur'prisal
 
n
 
sur'prised
 
adj
 
surprisedly
 
adv
 
sur'priser
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
It is computed as the decrease in surprisal between the before state and the after state.
Uncertainty is the average surprisal for the infinite string of symbols produced by our device.
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