• synonyms


See more synonyms for blockade on Thesaurus.com
  1. the isolating, closing off, or surrounding of a place, as a port, harbor, or city, by hostile ships or troops to prevent entrance or exit.
  2. any obstruction of passage or progress: We had difficulty in getting through the blockade of bodyguards.
  3. Pathology. interruption or inhibition of a normal physiological signal, as a nerve impulse or a heart muscle–contraction impulse.
Show More
verb (used with object), block·ad·ed, block·ad·ing.
  1. to subject to a blockade.
Show More

Origin of blockade

1670–80; block (in the sense “to create obstacles”) + -ade1
Related formsblock·ad·er, nouncoun·ter·block·ade, noun, verb, coun·ter·block·ad·ed, coun·ter·block·ad·ing.non·block·ad·ed, adjectivepre·block·ade, noun, verb (used with object), pre·block·ad·ed, pre·block·ad·ing.pro·block·ade, adjectiveun·block·ad·ed, adjective

Synonym study

1. See siege.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for blockade

Contemporary Examples

Historical Examples

  • Besides which he established a blockade in front of the harbour when the weather permitted.



  • The blockade had raised even the most simple articles to the price of luxuries.

    The Bondwoman

    Marah Ellis Ryan

  • Then we will all have to get out or else be obliged to run the blockade.

  • They wont do that, and if they do, England will break the blockade.

    Among the Pines

    James R. Gilmore

  • The British Isles were declared to be in a state of blockade.

    Union and Democracy

    Allen Johnson

British Dictionary definitions for blockade


  1. military the interdiction of a nation's sea lines of communications, esp of an individual port by the use of sea power
  2. something that prevents access or progress
  3. med the inhibition of the effect of a hormone or a drug, a transport system, or the action of a nerve by a drug
Show More
verb (tr)
  1. to impose a blockade on
  2. to obstruct the way to
Show More
Derived Formsblockader, noun

Word Origin

C17: from block + -ade, as in ambuscade
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 blockade


mid-17c., from block (v.) + -ade, false French ending (the French word is blocus, 18c. in this sense, which seems to be in part a back-formation from the verb bloquer and in part influenced by Middle Dutch blokhuus "blockhouse").

Show More


late 17c., from blockade (n.). Related: Blockaded; blockading.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

blockade in Medicine


  1. Intravenous injection of large amounts of colloidal dyes in which the reaction of the reticuloendothelial cells to other influences is temporarily prevented.
  2. Arrest of nerve impulse transmission at autonomic synaptic junctions, autonomic receptor sites, or myoneural junctions through the action of a drug.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.