A lightweight information user interface is provided for displaying information about a selected text item, data item or other object in an electronic document that minimizes interruption of workflow with the electronic document. Upon selection of an item in an electronic document a quick look-up function may be invoked for retrieving information from a local or remote information source about the selected item. Retrieved information, for example, dictionary definitions, translations, contacts information and research information, is displayed in close proximity to the selected item in a lightweight user interface.