mindmap root((健谈)) vocal usually implies ready responsiveness to an occasion for expression or free and usually forceful, insistent or emphatic voicing of one's ideas or feelings : one of the president's most ~ critics. articulate implies the use of language which exactly and distinctly reveals or conveys what it seeks to express: questioned the validity of literary criticism coming from those who are themselves hardly ~. fluent stresses facility in speaking or writing and copiousness in the flow of words: seemed to be ~ on any subject; it can also apply to facility and ease in the use of a foreign language: had a ~ command of idiomatic French. eloquent usually implies fluency but it suggests also the stimulus of powerful emotion and its expression in fervent and moving language: moved by the ~ words of the Gettysburg Address . voluble is usually somewhat derogatory and suggests a flow of language that is not easily stemmed: indulge in ~ explanations. glib is also usually derogatory and implies superficiality or emptiness in what is said or slipperiness or untrustworthiness in the speaker: a ~ reply; known for his ~ tongue.