deterrent - definition and synonyms

 
noun [countable] 

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/dɪˈterənt/
singulardeterrent
pluraldeterrents
  1. 1
    something that makes people decide not to do something by making them realize that something unpleasant could happen to them
    deterrent to:

    Fear of being caught acts as a deterrent to breaking the law.

  2. 2
    a weapon whose purpose is to make other countries afraid to attack the country that owns it

    Britain’s nuclear deterrent