Third-person singular simple present indicative form of improve

Quality of being improvable; capability of improvement.

plural of improvization

(rare) Alternative form of improvisation

plural of improvability

So as to permit improvement. / In a way that cannot be proven.

To fix, make better or increase the quality of (something) in comparison to previous attempts; to contribute to an ongoing effort to improve (something).

plural of improval

Alternative spelling of improvable (“able to be improved”)

(nonstandard) improvement