facetious
all words have vowels in them
Yes. 'Facetious' and 'Abstemious' are two of them.
cauliflower
authoreiaetian
autau
The 8-letter word that contains four 'N's and the other four letters are all vowels is "announcer."
"EAU" is the only all-vowel three letter word.
All words in the English language must have vowels. Even one letter words like 'a' or 'I'.
There are no common English words consisting of all vowels. Although A,E, I, O, and U are always vowels, Y and W can be used as vowels (e.g. Welsh). However, there are no instances where they are used as vowels along with only other vowels.Sequoia is a word using all of the vowels but not consisting of only vowels.
Unproprietary, miscellaneous
That is a trick question. You can't make a four letter word using all five vowels.
There is no common term for these, which is a bit strange, as you are not the first to have their imagination captured by this.