6. The method of claim 1 , wherein attempting to identify the synonym for the first voice command comprises retrieving, for the first voice command, a previously-stored alternative voice command associated with the first voice command, the previously-stored alternative voice command comprising the synonym.
7. The method of claim 6 , further comprising, prior to performing the speech recognition process, creating the previously-stored alternative voice command, the creating comprising: receiving a request from a user to add a new voice command to a voice command grammar, the new voice command comprising the first voice command; searching a data store of synonyms based on the first voice command to determine the synonym; adding the synonym to the voice command grammar and associating the synonym with the first voice command as an alternative to the first voice command.