9. The method of claim 1 , wherein the first voice command is a phrase comprising two or more words and attempting to identify the synonym for the at least one word of the first voice command comprises attempting to identify a synonym for the phrase.
1. A method comprising: performing, using a speech processing engine, a speech recognition process on a first speech input to determine whether at least a portion of the first speech input potentially matches any of a plurality of voice commands; and when it is determined, based on the speech recognition process, that the at least a portion of the first speech input potentially matches at least a first voice command and a second voice command of the plurality of voice commands, attempting to identify a synonym for at least one word of the first voice command, and when the synonym is identified, prompting a user to provide a second speech input including the synonym if the user intended to invoke the first voice command by speaking the first speech input.