fast - definition and synonyms


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  1. 1

    We drove as fast as we could to the hospital.

    I can’t run very fast.

    Can’t you work any faster?

     Synonyms and related words
    1. a.
      over a short period of time

      The business has grown very fast.

      fast becoming/developing/disappearing etc:

      This company is fast becoming a major exporter of computer software.

       Synonyms and related words
    2. b.
      without waiting or delaying

      You need to get help fast!

      We got there as fast as we could.

  2. 2
    firmly and strongly or tightly

    She held fast to the railings and refused to move.

    The van was stuck fast in the mud.