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deadly - definition and synonyms

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adjective     deadly pronunciation in American English
Word Forms
  1. 1
    able or likely to kill people

    This is a potentially deadly disease.

    a deadly weapon:

    The police charged him with possession of a deadly weapon.

    deadly to:

    Too many water changes can prove deadly to these delicate fish.

  2. 2
    [only before noun] complete
  3. 3
    informal very boring

    the same old deadly routine

  4. 4
    always able to achieve the intended result, effect, or purpose

    Miller is a deadly shooter from the three-point line.

  5. From our crowdsourced Open Dictionary
    something that is deadly is fantastic or as good as it possibly can be

    That teacher is deadly! That was a deadly class.

    Submitted by Marg from Australia on 08/08/2009


to manipulate someone psychologically so that they begin to question their own perceptions and memories

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Open Dictionary

Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

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