Words with no vowels. Cwm and crwth do not contain the letters a, e, i, o, u, or y, the usual vowels (that is, the usual symbols that stand for vowel sounds) in English. But in those words the letter w simply serves instead, standing for the same sound that oo stands for in the words boom and booth.
There are over 100 entries in OxfordDictionaries.com that don't have any vowels, but most of these are initialisms (abbreviations consisting of initial letters pronounced separately) like HTML, DVD, and LBD.
Not including plurals, there is only one seven-letter word which has none of the five vowels. That word is nymphly, which is a rare variation of 'nymphlike'. However, two six-letter words, glycyl and rhythm, can have an 's' added in the plural to make a seven-letter word without a vowel.
Words without written vowels
The longest such lexical word is tsktsks, pronounced /ˌtɪskˈtɪsks/. The mathematical expression nth /ˈɛnθ/, as in delighted to the nth degree, is in fairly common usage. Another mathematical term without vowel letters is ln, the natural logarithm.
An English pangram is a sentence that contains all 26 letters of the English alphabet. The most well known English pangram is probably “The quick brown fox jumps over the lazy dog”. A perfect pangram is a pangram where each of the letters appears only once.
Eunoia, at six letters long, is the shortest word in the English language that contains all five main vowels. Seven letter words with this property include adoulie, douleia, eucosia, eulogia, eunomia, eutopia, miaoued, moineau, sequoia, and suoidea. (The scientific name iouea is a genus of Cretaceous fossil sponges.)
Y is considered to be a vowel if… The word has no other vowel: gym, my. The letter is at the end of a word or syllable: candy, deny, bicycle, acrylic.
Myrrh: A gum resin added to produce incense. Nymph: A popular mythology-based deity used to represent a beautiful maiden. Pygmy: An undersized plant, animal, or person. Crwth: A Celtic instrument used during the ancient period.
Words (found in major English dictionaries) consisting entirely of vowels include AA (a type of lava), AE, AI, AIEEE, IAO, OII, EAU, EUOUAE, OE, OO, I, O, A, IO, and UOIAUAI, the last of these being the longest vowel-only word (seven letters).
A, E, I, O, U, and sometimes Y … and W? Yes, the letter W can behave as a vowel. It's time to level up your Scrabble game, people. And, to all our grade-school peeps out there, get ready to knock the socks off your spelling teacher.
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word entered in the most trusted English dictionaries.
The longest words in the dictionary are: antidisestablishmentarianism - opposition to the disestablishment of the Church of England - 28 letters. floccinaucinihilipilification - the estimation of something as worthless - 29 letters. pneumonoultramicroscopicsilicovolcanoconiosis - a supposed lung disease - 45 letters.
The letter Y can be regarded as both a vowel and a consonant.
Overmorrow: on the day after tomorrow.
ai: a three-toed sloth of the genus Bradypus of South America. ea: (dialectical, England) river, stream. eau: a watery solution (as of perfume) ee: (Scottish) eye.
Vowels in syllables
Every syllable of every word must have at least one vowel sound. A vowel can stand alone in a syllable, as in u•nit and an•i•mal. It can also be surrounded by consonants, as in jet, nap•kin, and fan•tas•tic.
All English words are written with vowel letters in them. These letters are vowels in English: A, E, I, O, U, and sometimes W and Y. It is said that Y is "sometimes" a vowel, because the letter Y represents both vowel and consonant sounds.
"An X" is correct, as the pronunciation of the letter X has an initial vowel sound.
In English, there are no words for colors that do not have vowels. Hokkien Chinese Ng, with a rising tone, means yellow (黃).
The shortest word is a. Some might wonder about the word I since it consists of one letter, too. In sound, a is shorter because it is a monophthong (consists of one vowel), while I is a diphthong. Both do consist of one letter in the English writing system, and in most fonts I is the narrowest letter.