Synonyms of 'improvise'
1 deviseDictionary, contrive, make do
If you don't have a wok, improvise one.
2 ad-libDictionary, invent, vamp
Take the story and improvise on it.
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If you ad-lib something in a play or a speech, you say something which has not been planned or written beforehand.
He is rather disjointed when he ad-libs.
If you concoct an excuse or explanation, you invent one that is not true.
He said the prisoner had concocted the story to get a lighter sentence.
If you contrive an event or situation, you succeed in making it happen, often by tricking someone.
The oil companies were accused of contriving a shortage of gasoline to justify price increases.
Thesaurus for improvise from the Collins English Thesaurus
If you improvise , you make or do something using whatever you have or without having planned it in advance .