IOU (A note promising to pay someone some money you owe them.) is considered a word by some dictionaries. Other dictionaries use I.O.U. (So it may or may not be a 'word' for the purposes of the question. I can't think of any other word which meets the requirements.
A more usual form of the question is "What word in the English language contains all the vowels in alpahbetical order?"
There are two answers to THAT question
Abstemious - and - Facetious
The vowels are 'u' & ' i'. The five vowels in the English language are 'a,e,i,o,u.'.
The longest word in the English language without vowels is... syzygy
It is called a Bar Mitzvah and no, the Torah contains no vowels.
Twyndyllyngs is the longest word in English that doesn't contain one of the five vowels.
cauliflower
There are five vowels in the English language: A, E, I, O, and U.
Consonants entered the English language at about the same time as vowels.
Abstemiously and facetiously both have the vowels in order.
There are no words in the English language that have no vowels, other than non-standard words representing grunts.
not in the English language. But if you use chatspeak:l8rw8rw8rcb
Taramasalata
If there is, it is not an English word.