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form - definition and synonyms

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verb     form pronunciation in American English
Word Forms
present tense
present participleforming
past tenseformed
past participleformed
  1. 1
    [intransitive] to make something exist or develop

    A change in temperature may make moisture form on the windows.

    A smile formed on his lips.

    A plan began to form in her mind.

    1. a.
      [transitive] to make something start to exist or develop

      The valley was formed by erosion.

      He has been with the club since it was first formed in 1972.

      She formed a deep attachment to the child.

      form an impression of:

      The interview will give you a chance to form an impression of the company.

  2. 2
    [intransitive/transitive] to move together to create a particular shape

    The boys and girls formed a line behind their teacher.

    A dozen or so armed guards formed a ring around the exit.

    1. a.
      [transitive] to make something into a particular shape
      form something into something:

      Roll the clay between your hands and form it into a ball.

  3. 3
    [linking verb] to be something, or to be the parts that something consists of
    Synonyms and related words
  4. 4
    [transitive] to influence the development of something

    Her character was largely formed by the loss of her family in the war.

  5. 5
    [transitive] linguistics to make one of the parts of a verb or other word that has several different parts

    You normally add “-ing” to form the present participle of English verbs.

phrasal verbs

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

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Dunning-Kruger effect

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

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