That becomes better; improving.

That improves or makes better; = ameliorating, adj.

That improves something or someone (in various senses of improve, v.2); esp. that has a beneficial effect on a person's morals, character, or…

That enriches; in the senses of the verb.

That ameliorates or improves something; (also) that undergoes amelioration.

Tending or intended to ameliorate something; tending or intended to improve, alleviate, or mitigate something.

That improves or ameliorates; (Linguistics) giving or acquiring a more favourable meaning or connotation (opposed to pejorative). Also gen.…