frustrate

[fruhs-treyt]
verb (used with object), frustrated, frustrating.
1.
to make (plans, efforts, etc.) worthless or of no avail; defeat; nullify: The student's indifference frustrated the teacher's efforts to help him.
2.
to disappoint or thwart (a person): a talented woman whom life had frustrated.
verb (used without object), frustrated, frustrating.
3.
to become frustrated: His trouble is that he frustrates much too easily.
adjective

Origin:
1400–50; late Middle English < Latin frustrātus, past participle of frustrārī, verbal derivative of frustrā in vain

frustrater, noun
frustratingly, adverb
frustrative [fruhs-trey-tiv, -truh-] , adjective
refrustrate, verb (used with object), refrustrated, refrustrating.


1. balk, foil, circumvent. See thwart.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
frustrate (frʌˈstreɪt)
 
vb
1.  to hinder or prevent (the efforts, plans, or desires) of; thwart
2.  to upset, agitate, or tire: her constant complaints began to frustrate him
 
adj
3.  archaic frustrated or thwarted; baffled
 
[C15: from Latin frustrāre to cheat, from frustrā in error]
 
frus'trater
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

frustrate
mid-15c., from L. frustratus, pp. of frustrari "to deceive, disappoint, frustrate," from frustra (adv.) "in vain, in error," related to fraus "injury, harm." Related: Frustrated; frustrating.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
Instead of composing free verse, poets frustrate themselves with structural
  constraints.
Arraignment delays are costly to taxpayers and frustrate law enforcement.
And unknown subsurface challenges may await to frustrate the area's production.
As picky consumers frustrate shops, investors move in.
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