Know saying wrongish, but for multi-char-exclusion matching, can't you just do [...

bear8642 on July 9, 2021 | parent | context | favorite | on: The Greatest Regex Trick Ever (2014)

Know saying wrongish, but for multi-char-exclusion matching, can't you just do [^chars]?

So to search for words without any vowels just 'grep [^aeiou]'?