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ad-lib

Definitions of ad-lib
  1. verb
    perform without preparation
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    type of:
    do, execute, perform
    carry out or perform an action
  2. noun
    remark made spontaneously without prior preparation
    see moresee less
    type of:
    comment, input, remark
    a statement that expresses a personal opinion or belief or adds information
  3. adjective
    said or done without having been planned or written in advance
    “he made a few ad-lib remarks”
    synonyms: spontaneous, unwritten
    unscripted
    not furnished with or using a script
  4. adjective
    with little or no preparation or forethought
    “his ad-lib comments showed poor judgment”
    unprepared
    without preparation; not prepared for
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