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noun impulse pronunciation in British English /ˈɪmpʌls/ 
Word Forms
  1. 1
    [countable/uncountable] a sudden strong feeling that you must do something
    an impulse to do something:

    Jenny felt a sudden impulse to play some music.

    control/resist an impulse:

    She struggled to resist the impulse to laugh.

    on (an) impulse (=because you suddenly feel that you want to):

    He saw them get into the car and on an impulse he followed them.

    act on impulse:

    Acting on impulse, he knocked on her door.

    Synonyms and related words for this sense of impulse


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