1. (v. t.) To disprove or make void; to refute.

2. (v. t.) To disapprove; to find fault with; to reprove; to censure; as, to improve negligence.

3. (v. t.) To make better; to increase the value or good qualities of; to ameliorate by care or cultivation; as, to improve land.

4. (v. t.) 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.

5. (v. t.) To advance or increase by use; to augment or add to; -- said with reference to what is bad.

6. (v. i.) To grow better; to advance or make progress in what is desirable; to make or show improvement; as, to improve in health.

7. (v. i.) To advance or progress in bad qualities; to grow worse.

8. (v. i.) To increase; to be enhanced; to rise in value; as, the price of cotton improves.

accommodate acculturate adapt adjust advance alter ameliorate amend apprentice be changed be converted into be renewed benefit benefit from best better boost bottom out brace up break break in break up breed bring forward bring up cap capitalize on cash in on change checker chop chop and change civilize come about come along come around come on come round complete condition convalesce convert correct crown culminate cultivate deform degenerate denature deteriorate develop deviate discipline diverge diversify do to perfection drill edify edit educate elevate emend enhance enlighten enrich exceed excel exercise exploit fatten favor fetch up fit fix up flop form forward foster further gain gain ground gain strength get ahead get along get better go ahead go forward go one better go straight graduate groom grow better haul around help house-train housebreak illume illumine improve on improve the occasion improve upon increase irradiate jibe lard lick into shape lift look up make an improvement make capital of make hay make headway make progress make strides mature meliorate mend mitigate modernize modify modulate mutate nurse nurture outweigh overbalance overbear overcome overhaul overpass overthrow overtop perfect perk up pick up practice predominate prepare preponderate prevail profit by progress promote put in tune put right put to advantage put to school qualify raise rally re-create ready realign rear rebuild recondition reconstruct recover recruit rectify recuperate redeem redesign redress refine refine upon refit reform refurbish rehabilitate rehearse remake remedy remodel renew renovate repair reshape restructure revamp revise revive ring the changes ripen rub up send to school set right shape up shift shift the scene show improvement shuffle the cards skyrocket sleep it off socialize straighten out strengthen subvert surpass swerve tack take a turn take advantage of take in hand take off top tower above tower over trade on train transcend transfigure transform trump turn turn aside turn into turn the corner turn the scale turn the tables turn the tide turn to account turn to profit turn to use turn upside down undergo a change update upgrade uplift use to advantage vary veer warp work a change worsen