feeling, characterized by, or expressing strong displeasure at something considered unjust, offensive, insulting, or base: indignant remarks; an indignant expression on his face.
Origin: 1580–90; < L indignant- (s. of indignāns, prp. of indignārī to deem unworthy, take offense), equiv. to in-in-3+ dign-, s. of dignus worthy + -ant--ant