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knock off (4) Informal

Meaning: to reduce something, like a price or an amount

For example:

  • knock off sth I'll bargain with her and see if she'll knock off a few dollars for us.

  • knock sth off They've already knocked ten percent off the usual price, so they probably won't knock any more off.

Quick Quiz:

Mark has knocked two seconds off his previous best time of 4 minutes and 20 seconds. His best time is now
  1. 4 minutes and 18 seconds
  2. 4 minutes and 22 seconds
  3. 4 minutes and 20.2 seconds

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