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ad lib, ad libitum, spontaneously, impromptu | without advance preparation | |
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ad-lib, spontaneous, unwritten | said or done without having been planned or written in advance | |
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ad-lib | remark made spontaneously without prior preparation | |
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ad-lib, impromptu, offhand, offhanded, extemporaneous, extemporary, extempore, off-the-cuff, unrehearsed | with little or no preparation or forethought | |
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V1, V2 |
improvise, improvize, ad-lib, extemporize, extemporise, think on one's feet | perform without preparation |