in·dig·nant 
(ĭn-dĭgnənt)
(ĭn-dĭgnənt)adj.
Characterized by or filled with indignation. See Synonyms at angry.
[Latin indignāns, indignant-, present participle of indignārī, to be indignant, from indignus, unworthy; see INDIGN.]
in·dignant·ly adv.