Actual means real or existing in fact, not imagined, estimated, or theoretical. When you want to know the actual cost of something, you want the real price, not a guess. When scientists study actual data from experiments, they're working with information they've truly collected, not predictions or theories.

The word helps you distinguish between what you think might be true and what really is true. If you estimate a book has 200 pages, but the actual number is 247, you're contrasting your guess with reality. When a teacher asks for an actual example from history rather than a made-up scenario, she wants something that truly happened.

Actual often appears when reality surprises us or differs from expectations. You might say “the actual winner was...” when revealing an unexpected result, or “in actual fact” when correcting a misunderstanding. The word carries weight because it anchors a conversation to what's genuinely real, cutting through assumptions, estimates, or mistaken beliefs to get at the truth of the matter.