Oxford Dictionary English special agent nounnoun BrE BrE//ˈspeʃl eɪdʒənt// ; NAmE NAmE//ˈspeʃl eɪdʒənt// Add to my wordlistjump to other results a detective who works for the federal government in the US, for example for the FBISee special agent in the Oxford Advanced American DictionaryCheck pronunciation: special agent oxfordlearnersdictionaries.com