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obstruct

[uh b-struhkt]
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verb (used with object)
  1. to block or close up with an obstacle; make difficult to pass: Debris obstructed the road.
  2. to interrupt, hinder, or oppose the passage, progress, course, etc., of.
  3. to block from sight; to be in the way of (a view, passage, etc.).
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Origin of obstruct

First recorded in 1605–15, obstruct is from the Latin word obstructus (past participle of obstruere to build or pile up in the way, bar). See ob-, construct
Related formsob·struct·ed·ly, adverbob·struct·er, ob·struc·tor, nounob·struct·ing·ly, adverbob·struc·tive, adjectiveob·struc·tive·ly, adverbob·struc·tive·ness, ob·struc·tiv·i·ty [ob-struhk-tiv-i-tee] /ˌɒb strʌkˈtɪv ɪ ti/, nounnon·ob·struc·tive, adjectivenon·ob·struc·tive·ly, adverbnon·ob·struc·tive·ness, nounpre·ob·struct, verb (used with object)un·ob·struct·ed, adjectiveun·ob·struc·tive, adjective

Synonyms

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1. stop, choke, clog, hinder, impede, prevent; check, slow, retard, arrest.

Antonyms

1. encourage, further.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for obstruct

obstruct

verb (tr)
  1. to block (a road, passageway, etc) with an obstacle
  2. to make (progress or activity) difficult
  3. to impede or block a clear view of
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Derived Formsobstructor, nounobstructive, adjective, nounobstructively, adverbobstructiveness, noun

Word Origin

C17: Latin obstructus built against, past participle of obstruere, from ob- against + struere to build
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 obstruct

v.

1610s, a back-formation from obstruction or else from Latin obstructus, past participle of obstruere "to block, to stop up" (see obstruction). Related: Obstructed; obstructing.

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Online Etymology Dictionary, © 2010 Douglas Harper

obstruct in Medicine

obstruct

(əb-strŭkt, ŏb-)
v.
  1. To block or close a body passage so as to hinder or interrupt a flow.
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Related formsob•structive adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.