to disprove or make void; to refute.-to disapprove; to find fault with; to reprove; to censure; as, to improve negligence.-to make better; to increase the value or good qualities of; to ameliorate by care or cultivation; as, to improve land.-to use or employ to good purpose; to make productive; to turn to profitable account; to utilize; as, to improve one's time; to improve his means.-to advance or increase by use; to augment or add to; -- said with reference to what is bad.-to grow better; to advance or make progress in what is desirable; to make or show improvement; as, to improve in health.-to advance or progress in bad qualities; to grow worse.-to increase; to be enhanced; to rise in value; as, the price of cotton improves.