A raid is a sudden, quick attack meant to accomplish a specific goal and then get out fast. Unlike a long battle or siege, a raid focuses on speed and surprise. Vikings might raid a coastal village, grabbing treasure and supplies before defenders could organize. Police might raid a building where they suspect criminals are hiding. In these cases, the raiders strike quickly, achieve their objective, and leave before facing serious opposition.

The word appears in many contexts. In video games, players go on raids to defeat powerful bosses or collect rare items. A midnight raid on the refrigerator means sneaking down for a snack when everyone's asleep. A raider is someone who conducts raids, whether it's a historical Viking raider or a modern sports team like the Las Vegas Raiders.

What makes something a raid rather than just an attack is the combination of surprise, speed, and a clear target. A raiding party doesn't plan to stay and occupy territory. They get in, accomplish their mission, and get out. That's why we say someone raided the cookie jar: they moved quickly while no one was watching, took what they wanted, and disappeared before getting caught.