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improvise

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verb improvise pronunciation in British English /ˈɪmprəvaɪz/ 
Word Forms
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present tense
I/you/we/theyimprovise
he/she/itimprovises
present participleimprovising
past tenseimprovised
past participleimprovised
  1. 1
    [intransitive] to do something without preparing it first, often because the situation does not allow you to prepare

    She'd forgotten her carefully written speech, but knew she could easily improvise.

  2. 2
    [transitive] to make something from whatever is available, although it is not what you normally use

    We used old shirts to improvise dressings for their wounds.

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