cor·rect 
(kə-rĕkt)
(kə-rĕkt)v. cor·rect·ed, cor·rect·ing, cor·rects
v.tr.
1.
a. To make or put right: correct a mistake; correct a misunderstanding.
b. To remove the errors or mistakes from: corrected her previous testimony.
c. To indicate or mark the errors in: correct an exam.
2.
a. To speak to or communicate with (someone) in order to point out a mistake or error.
b. To scold or punish so as to improve or reform.
3. To remedy or counteract (a defect, for example): The new glasses corrected his blurry vision.
4. To adjust so as to meet a required standard or condition: correct the wheel alignment on a car.
v.intr.
1. To make corrections.
2. To make adjustments; compensate: correcting for the effects of air resistance.
adj.
1. Free from error or fault; true or accurate.
2. Conforming to standards; proper: correct behavior.
[Middle English correcten, from Latin corrigere, corrēct- : com-, intensive pref.; see COM- + regere, to rule; see reg- in the Appendix of Indo-European roots.]
cor·recta·ble, cor·recti·ble adj.
cor·rectly adv.
cor·rectness n.
cor·rector n.
Synonyms: correct, rectify, remedy, redress, revise, amend
These verbs mean to make right what is wrong. Correct refers to eliminating faults, errors, or defects: I corrected the spelling mistakes. The new design corrected the flaws in the earlier version.
Rectify stresses the idea of bringing something into conformity with a standard of what is right: "It is dishonest to claim that we can rectify racial injustice without immediate cost" (Mari J. Matsuda).
Remedy involves removing or counteracting something considered a cause of harm, damage, or discontent: He took courses to remedy his abysmal ignorance.
Redress refers to setting right something considered immoral or unethical and usually involves some kind of recompense: "They said he had done very little to redress the abuses that the army had committed against the civilian population" (Daniel Wilkinson).
Revise suggests change that results from careful reconsideration: The agency revised its safety recommendations in view of the new findings.
Amend implies improvement through alteration or correction: "Whenever [the people] shall grow weary of the existing government, they can exercise their constitutional right of amending it, or their revolutionary right to dismember or overthrow it" (Abraham Lincoln).
These verbs mean to make right what is wrong. Correct refers to eliminating faults, errors, or defects: I corrected the spelling mistakes. The new design corrected the flaws in the earlier version.
Rectify stresses the idea of bringing something into conformity with a standard of what is right: "It is dishonest to claim that we can rectify racial injustice without immediate cost" (Mari J. Matsuda).
Remedy involves removing or counteracting something considered a cause of harm, damage, or discontent: He took courses to remedy his abysmal ignorance.
Redress refers to setting right something considered immoral or unethical and usually involves some kind of recompense: "They said he had done very little to redress the abuses that the army had committed against the civilian population" (Daniel Wilkinson).
Revise suggests change that results from careful reconsideration: The agency revised its safety recommendations in view of the new findings.
Amend implies improvement through alteration or correction: "Whenever [the people] shall grow weary of the existing government, they can exercise their constitutional right of amending it, or their revolutionary right to dismember or overthrow it" (Abraham Lincoln).