Antidisinhibiting.
A seven (7) letter word without vowels: glycyls
There are 4 vowels and 7 consonants in this word. So, 4/11 of the letters are vowels.
Rocking is a word with 7 letters 5 consonants and 2 vowels
The longest word without vowels is "rhythms." It has 7 letters and does not contain any vowels.
Address
aerious
Sequoia.
The word "educational" has 6 vowels (e, u, a, i, o, a) and 6 consonants (d, c, t, n, l).
There are six vowels in the word "onomatopoeia": o, a, a, o, e, i.
sequoia
There are more consonants.
invisibility