howdy
A friendly, informal way of saying hello.
Howdy is a friendly, informal greeting that means “hello.” It's short for “how do you do?” but over time it got shortened and relaxed into this cheerful one-word version.
You'll hear howdy most often in the American West and South, where it fits the relaxed, neighborly way people greet each other. A rancher might call out “Howdy!” when meeting someone on a dusty trail, or a shopkeeper in Texas might greet customers with a warm howdy as they walk through the door.
The word has a casual, welcoming feeling to it. You wouldn't say howdy in a formal situation like meeting the principal or giving a presentation, but it's perfect for friends, neighbors, or friendly strangers. Some people think it sounds old-fashioned or cowboy-like, but in many places it's still an everyday greeting that people use naturally.
When someone greets you with howdy, they're usually being genuinely friendly and trying to make you feel welcome. It's the kind of word that often comes with a smile or a tip of the hat.