instant - definition and synonyms


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  1. 1
    [countable] [usually singular] an extremely short period of time, that ends almost immediately

    It took only an instant for him to react.

    She paused for an instant and then stepped inside.

    in an instant:

    The earthquake flattened the whole city centre in an instant.

  2. 2
    [singular] an exact point in time

    At that exact instant, all the lights went out.