deterrent

A deterrent makes you not want to do something. Let's say there's a giant pile of cookies being guarded by an angry dog — the dog is a deterrent.

People talk about deterrents most often when discussing crime. The death penalty is supposed to be a deterrent — the idea is that people will be so scared of the death penalty that they won't commit certain crimes. Jail is another deterrent. Teachers also use deterrents — the possibility of getting detention is a deterrent that should encourage students to behave. A deterrent is the opposite of a reward. A reward encourages you to do the right thing, while a deterrent discourages you from doing the wrong thing.

Definitions of deterrent
  1. noun
    something immaterial that interferes with or delays action or progress
    synonyms: balk, baulk, check, handicap, hinderance, hindrance, impediment
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    types:
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    albatross, millstone
    (figurative) something that hinders or handicaps
    bind
    something that hinders as if with bonds
    diriment impediment
    (canon law) an impediment that invalidates a marriage (such as the existence of a prior marriage)
    drag
    something that slows or delays progress
    obstacle, obstruction
    something immaterial that stands in the way and must be circumvented or surmounted
    straitjacket
    anything immaterial that severely hinders or confines
    barrier, roadblock
    any condition that makes it difficult to make progress or to achieve an objective
    hang-up, hitch, rub, snag
    an unforeseen obstacle
    hurdle
    an obstacle that you are expected to overcome
    stymie, stymy
    a thwarting and distressing situation
    type of:
    difficulty
    a factor causing trouble in achieving a positive result or tending to produce a negative result
  2. adjective
    tending to deter
    “the deterrent effects of high prices”
    Synonyms:
    preventative, preventive
    tending to prevent or hinder
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