in Latin "not".
Transitive Verb - To make up something without preparation.
"Surprised by the nomination, she had to 'improvise' her acceptance speech.
Transitive Verb - To make or provide from materials on hand.
"The shipwrecked crew 'improvided; a boat from barrel staves."
Noun - improvisation; Adjective - improvisational; Adjective - Adjective - improvisatory.
Adjective - Existing only in imagination; fanciful; not practical.
"The Jamestown settlers were long on 'visionary' schemes but short on funds and common sense.
Adjective - Characterized by vision or forethought.
"Ida B. Well's 'visionary' goal was equal justice for Americans of all races.