Hey kids! Next time your teacher asks you for a word containing no vowels, don't pull out the boring old examples of 'try', 'cry' and 'fly' that everybody uses. Even 'rhythm' is dull and passe. Instead, try this one on for size:

syzygy: A pair of connected or correlative things; in Gnostic theology, a couple or pair of opposites, or of æons.

Your teachers won't know what's hit 'em.