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useless - definition and synonyms

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adjective     useless pronunciation in American English
  1. useless objects have no purpose or cannot do what they were designed to do

    This technology is useless if you can’t operate it.

    Why do you keep this completely useless umbrella?

    prove useless:

    Most of his inventions proved useless.

    1. a.
      useless activities are not effective in achieving the purpose that they were intended to achieve

      Will’s parents think acting is a useless profession.

      it’s useless trying to do something:

      It’s useless trying to talk to her because she never listens.

    2. b.
      offensive if someone is useless, they are not any help to you or are not capable of achieving anything

      Don’t ask Jeff – he’s useless!

      useless at something (=very bad at it):

      I’m useless at cooking.

    3. c.
      a part of your body or mind that is useless cannot be used because of an illness or injury

      Since the stroke, my left arm has been useless.

derived words


noun [uncountable]
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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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