Would a system that's more convenient but less reliable actually be an improvement?
And between 2008 and 2010, Oakland has outpaced the rest of California in improvement at the elementary- and middle-school levels.
Taken cumulatively, the fruits of capitalism have produced an improvement in quality of life that was once unimaginable.
mid-15c., enprowment "management of something for profit," from Anglo-French emprowement, from emprouwer "turn to profit" (see improve). Meaning "betterment; amelioration" is from 1640s. Meaning "buildings, etc. on a piece of property" is from 1773. Related: Improvements.