/ɪnˈfɔ:m ||; ɪnˈfɔrm/verb [T] inform sb (of/about sth) to give sb information (about sth), especially in an official way 通知，告知（尤指通过正式途径）: You should inform the police of the accident. 你应该告之警方这起事故。 Do keep me informedof any changes. 有什么变动，请你通知我。 inform on sb to give information to the police, etc about what sb has done wrong 告发；密告: The wife of the killer informed on her husband. 杀人凶手的妻子告发了她的丈夫。