vindicate

exculpate, absolve, exonerate, acquit, vindicate mean to free from a charge. exculpate implies a clearing from blame or fault often in a matter of small importance <exculpating himself from the charge of overenthusiasm>. absolve implies a release either from an obligation that binds the conscience or from the consequences of disobeying the law or committing a sin <cannot be absolved of blame>. exonerate implies a complete clearance from an accusation or charge and from any attendant suspicion of blame or guilt <exonerated by the investigation>. acquit implies a formal decision in one's favor with respect to a definite charge <voted to acquit the defendant>. vindicate may refer to things as well as persons that have been subjected to critical attack or imputation of guilt, weakness, or folly, and implies a clearing effected by proving the unfairness of such criticism or blame <her judgment was vindicated>.

maintain, assert, defend, vindicate, justify mean to uphold as true, right, just, or reasonable. maintain stresses firmness of conviction <steadfastly maintained his innocence>. assert suggests determination to make others accept one's claim <asserted her rights>. defend implies maintaining in the face of attack or criticism <defended his voting record>. vindicate implies successfully defending <his success vindicated our faith in him>. justify implies showing to be true, just, or valid by appeal to a standard or to precedent <the action was used to justify military intervention>.