unsocialized aggressive reaction /unsō″shəlīzd/ [ME, un + L, socialis, companion, aggressio, an attack, re, again + agere, to act] , a behavior disorder of childhood characterized by overt and covert hostility, disobedience, physical and verbal aggression, vengefulness, quarrelsome behavior, and destructiveness, often manifested in acts such as lying, stealing, temper tantrums, vandalism, and physical violence against others.
