1. A computer-implemented method of providing expressive user interaction with a multimodal application, the multimodal application operating in a multimodal browser on a multimodal device supporting multiple modes of user interaction including a voice mode and one or more non-voice modes, the multimodal application operatively coupled to a speech engine through a VoiceXML interpreter, the method comprising: receiving, by the multimodal browser, user input from a user through a particular mode of user interaction; determining, by the multimodal browser, user output for the user in dependence upon the user input; determining, by the multimodal browser, a style for the user output in dependence upon the user input, the style specifying expressive output characteristics for at least one other mode of user interaction; and rendering, by the multimodal browser, the user output in dependence upon the style, wherein determining the style for the user output in dependence upon the user input comprises performing a determination distinct from determining the user output, wherein determining, by the multimodal browser, a style for the user output in dependence upon the user input comprises determining, by the multimodal browser, a style for the user output in dependence upon meaning of the user input.