indignation (n.) Look up indignation at Dictionary.com
c.1200, from Old French indignacion or directly from Latin indignationem (nominative indignatio) "indignation, displeasure," noun of action from past participle stem of indignari "regard as unworthy, be angry or displeased at," from indignus "unworthy," from in- "not, opposite of" (see in- (1)) + dignus "worthy" (see dignity).