improvised
adj. B2 Upper Intermediate US //ˈɪmpɹəˌvaɪzd// UK //ˈɪmpɹəvˌaɪzd// im·pro·vised
adj. made or done without any preparation. You use this when you have to use whatever is available because you do not have the right tools or a plan.
adj. created or performed spontaneously without prior preparation or planning. Often refers to music, speech, or physical objects created from available materials.
We sat on improvised chairs made of old wooden crates.
The actor forgot his lines but gave an improvised speech that the audience loved.
In the absence of professional medical supplies, the rescue team used an improvised stretcher made from sturdy branches and a heavy canvas tarp.
Usage
Commonly used both attributively before a noun and predicatively after a linking verb.