Drastic describes an action or change that is extreme, severe, or sudden. When something is drastic, it's not a small adjustment or gentle shift: it's a major, dramatic move that makes a big difference.

If your grades start slipping, studying an extra fifteen minutes each night is a reasonable change. But if you suddenly decide to wake up at 5 AM every day and study for three hours before school, that's a drastic change. If a coach benches one player, that's a normal decision. But if the coach throws out the entire playbook and creates a completely new strategy the day before a championship game, that's a drastic decision.

Drastic measures usually come when normal solutions haven't worked or when a situation is urgent. A doctor might recommend drastic treatment for a serious illness. A principal might take drastic action if students keep ignoring basic safety rules. A family might make a drastic decision to move across the country for an important new job opportunity.

The word carries a sense of necessity mixed with risk. Drastic choices are bold and consequential, meant to solve serious problems, but they can also backfire if they're too extreme or poorly planned.