But why would you not consider any y's to be vowels? The rule is "sometimes y (and w)", not "y if you feel like it". Y is a vowel when it makes a vowel sound as in crypt, by, syzygy, rhythm, happy, gray, etc., and it is a consonant when it makes the "yuh" consonant sound, as in yellow, you, and yuppie.

So if you exclude the words with W in them (and possibly add the dubious words TSKTSK and TSKTSKS), medwyn's list does in fact contain the only words without vowels.