Test, validate and match regular expressions
Matches whole words consisting only of non-vowel, non-whitespace characters. With the case-insensitive flag, both uppercase and lowercase vowels (a, e, i, o, u) are excluded, so it captures vowel-less words like 'gym', 'rhythm', 'myth', or acronyms like 'MVP' and 'DVD'. Useful for linguistic analysis, word games, filtering acronyms, or finding consonant-only tokens in text.