An advisor is someone who gives guidance, suggestions, or expert opinions to help others make good decisions. Teachers often serve as advisors to student clubs, helping members plan activities and solve problems. A financial advisor helps people decide how to save and invest their money. The president has advisors who are experts in different areas like education, defense, and the economy.

The key thing about advisors is that they advise rather than command. They share their knowledge and experience, but the person receiving the advice ultimately chooses what to do. When you ask your parents for advice about which instrument to learn, they're acting as your advisors, but you make the final choice.

Good advisors listen carefully, ask questions to understand the situation, and offer thoughtful suggestions based on what they know. A school advisor might help you pick classes that match your interests and goals. Unlike a boss who tells you what to do, an advisor respects that you're in charge of your own decisions while helping you see options you might not have considered. The alternate spelling adviser means exactly the same thing.