Mechanically means doing something in an automatic way, like a machine, without much thought or feeling. When you brush your teeth mechanically each morning, your hands go through the motions while your mind might be somewhere else entirely. When a student reads mechanically, they're sounding out the words correctly but not really thinking about what the story means.

The word comes from the idea of how machines work: predictably, repeatedly, the same way every time. A robot on an assembly line works mechanically, performing the exact same task over and over. When people do things mechanically, they're moving or acting almost like robots themselves.

Sometimes working mechanically is useful. A pianist practices scales mechanically until their fingers know exactly where to go without conscious effort. But other times, doing something mechanically can be a problem. If you apologize mechanically without really meaning it, people can tell you're just going through the motions. The words might be right, but the feeling behind them is missing.

The word can also refer to how machines and mechanical systems work. When something fails mechanically, it means the physical parts broke down: the gears stopped turning, the engine quit running, or the moving pieces stopped working together.