meliorate

verb

Etymology: First attested in 1542; borrowed from Late Latin meliorātus, perfect passive participle of meliorō (see -ate (verb-forming suffix)), from melior (“better”).

1. To make better; to improve; to solve a problem.

   “They offered some compromises in an effort to meliorate the disagreement.”

   “Nature by art we nobly meliorate.”

2. To become better.