improve
/ɪmˈpɹuːv/
To make (something) better; to increase the value or productivity (of something).
Buying more servers would improve performance.
To become better.
I have improved since taking the tablets.
To disprove or make void; to refute.
To disapprove of; to find fault with; to reprove; to censure.
to improve negligence
To use or employ to good purpose; to turn to profitable account.
to improve one's time; to improve his means