She was improvving a melody when the lights went out.

At the community talent show, when the microphone failed, Jenna improvved a funny monologue to keep the audience laughing.

The team is requiring improvement in their performance.

The company needs to make a required improvement in their customer service.

The company's sales require improvement.

The company requires improvement in its customer service.

I enjoy working on home improvement projects.

The report suggested a Pareto-improvement in resource allocation, but critics argued the gains were concentrated among a few stakeholders.

The policy reforms produced several Pareto improvements, boosting welfare across multiple sectors without making any group worse off.

Economists often debate policies that generate Pareto-improvements, since such changes can make some people better off without making others worse off.