Long-winded means using far more words than necessary to say something. A long-winded speaker goes on and on, adding extra details and explanations when a simple, direct answer would work better. If your friend asks what you did over the weekend and you spend twenty minutes describing every single thing that happened, including what you ate for breakfast both days, you're being long-winded.

The word often suggests that the extra length is both unnecessary and tiresome. A long-winded speech at an assembly might make students squirm in their seats, checking the clock every few minutes. A long-winded explanation in class can make a simple math concept seem more confusing than it really is.

Being thorough is different from being long-winded. When you're thorough, you include important details that help people understand. When you're long-winded, you pile on words that don't add much meaning. The difference lies in knowing what your listener actually needs to hear. Writers, speakers, and students who master this skill learn to make their point clearly and then stop, respecting everyone's time and attention.