improvise
verb
- to perform or create without preparation
Wiktionary
Pronunciation: /ˈɪm.pɹə.vaɪz/
verb
Etymology: From French improviser; ultimately from Latin improvisus.
- To make something up or invent it as one goes on; to proceed guided only by imagination, intuition, and guesswork rather than by a careful plan.
“He had no speech prepared, so he improvised.”
“They improvised a simple shelter with branches and the rope they were carrying.”