seasoned

A seasoned person or thing has a lot of experience or skill from doing something many times.

When we say someone is seasoned, it usually means they've been working at something for a long time and have become really good at it. It's like when you finally master a new recipe after trying it several times - your food tastes better, and you know exactly what to do next time. A chef might be described as seasoned because he's cooked for years and knows all the right techniques. But if we talk about something being seasoned, like a piece of meat or some vegetables, it means they've been left to sit in spices or herbs long enough to absorb their flavors. In that case, seasoning is more about adding taste than about someone having experience.