1 anger /ˈæŋgɚ/ noun. 1 anger. /ˈæŋgɚ/. noun. Learner's definition of ANGER. [noncount] : a strong feeling of being upset or annoyed because of something wrong or bad : the feeling that makes someone want to hurt other people, to shout, etc. : the feeling of being angry. He couldn't hide his anger with/at us. You could hear the anger in his voice.