/in'dig nay"sheuhn/ , n.
strong displeasure at something considered unjust, offensive, insulting, or base; righteous anger.
[ 1325-75; ME indignacio ( u ) n indignation- (s. of indignatio ), equiv. to indignat ( us ) ptp. of indignari to be indignant, take offense + -ion- -ION; see INDIGNANT ]
Syn . resentment, exasperation, wrath, ire, choler. See anger .
Ant . calm.