The longest English word without a vowel is "rhythms." This seven-letter word refers to a pattern of sound or movement occurring in a regular sequence, often found in music and poetry. While it may seem surprising, "rhythms" maintains its definition and significance in the English language despite the absence of traditional vowel letters, relying on the consonants and the occasional "y" to convey sound. The peculiar nature of this word often captures the interest of language enthusiasts and serves as a fun example of English vocabulary intricacies.