6. A method comprising: under control of one or more computer systems configured with executable instructions, receiving an audio input including a first candidate word for evaluation as a wake word that activates functionality of a computing device; determining a plurality of values from wake word metrics for the first candidate word, at least one of the plurality of values including a value indicative of an ease of pronouncing the first candidate word; and determining an overall score for the first candidate word based at least in part on the plurality of values.
6. A method comprising: under control of one or more computer systems configured with executable instructions, receiving an audio input including a first candidate word for evaluation as a wake word that activates functionality of a computing device; determining a plurality of values from wake word metrics for the first candidate word, at least one of the plurality of values including a value indicative of an ease of pronouncing the first candidate word; and determining an overall score for the first candidate word based at least in part on the plurality of values. 13. The method as recited in claim 6 , wherein the plurality of values includes at least one of: a value indicative of a similarity of the first candidate word to a plurality of other words of a language, the similarity to the plurality of other words of the language being determined based on a comparison between a phone sequence of at least one of the other words to a phone sequence of the first candidate word; and a value indicative of a similarity of the first candidate word to one or more taboo words, the similarity to the one or more taboo words being determined based on a comparison between a sequence of phones of at least one of the taboo words and the phone sequence of the first candidate word.