Multiple choice general knowledge ________is the longest English word without a vowel. Rhythm Pygmy Sylph Mythlgy Reveal answer Fill a bubble to check yourself A Correct answer Explanation Rhythm is indeed the longest common English word without a traditional vowel (a, e, i, o, u). It uses 'y' as a vowel sound. 'Pygmy' and 'sylph' are much shorter, and 'mythlgy' appears to be a misspelling.