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unnecessary

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adjective American English pronunciation: unnecessary /ʌnˈnesəˌseri/
  1. 1
    used for describing something that should not have happened because it could have been avoided

    The policy had caused thousands of families unnecessary suffering.

    The delay was totally unnecessary.

    1. a.
      unkind, rude, or offensive

      Some of her remarks were quite unnecessary.

  2. 2
    not needed

    Remove all unnecessary files from your computer.

derived word

unnecessarily

 American English pronunciation: unnecessarily  adverb

The instructions are unnecessarily complicated.

infobesity

the condition of continually consuming large amounts of information, especially when this has a negative effect on a person's well-being and ability to concentrate

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drive-by handshake

a brief handshake that is made without pausing or making eye contact, because you are upset or angry

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