or knock-off

[ nok-awf, -of ]
See synonyms for knockoff on
  1. an act or instance of knocking off.

  2. an unlicensed copy of something, especially fashion clothing, intended to be sold at a lower price than the original.

Origin of knockoff

First recorded in 1870–75, for an earlier sense; noun use of verb phrase knock off Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use knockoff in a sentence

  • I was pleased to climb aboard the Bonadventure with both, after passing through the knock-off rush from the docks.

    The Bonadventure | Edmund Blunden
  • He was on wages and had no right to knock-off for social receptions unless his commander gave him permission.

    The Viking Blood | Frederick William Wallace

British Dictionary definitions for knock off

knock off

verb(mainly adverb)
  1. (intr, also preposition) informal to finish work: we knocked off an hour early

  2. (tr) informal to make or do hastily or easily: to knock off a novel in a week

  1. (tr; also preposition) informal to reduce the price of (an article) by (a stated amount)

  2. (tr) slang to kill

  3. (tr) slang to rob or steal: to knock off a bank; to knock off a watch

  4. (tr) slang to stop doing something, used as a command: knock it off!

  5. (tr) slang to have sexual intercourse with; to seduce

  1. informal

    • an illegal imitation of a well-known product

    • (as modifier): knockoff watches

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

Other Idioms and Phrases with knockoff


Take a break or rest from, stop, especially quit working. For example, He knocked off work at noon, or Let's knock off at five o'clock. [Colloquial; mid-1600s] Also see knock it off.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.