Definition
A hyphen (-) is a punctuation mark that connects words or parts of words. It's used in compound words (e.g., "well-being"), to join prefixes to words (e.g., "ex-boyfriend"), or to break words at the end of a line. It's shorter than an en dash (–) or an em dash (—). Think of it as a bridge between two words. Unlike a comma, it doesn't separate, but binds. Knowing when to use it makes your writing clearer and more professional.