Wonderful means causing feelings of delight, admiration, or amazement. When something is wonderful, it fills you with a sense of joy or wonder that makes you glad to have experienced it.

A wonderful day might include perfect weather, time with friends, and discovering something new. A wonderful book transports you to another world so completely that you forget you're reading. When your grandmother makes her famous apple pie and the smell fills the whole house, you might say it smells wonderful.

Something wonderful inspires that same sense of delight, though it doesn't have to be enormous or dramatic. A wonderful gift might be simple but perfectly chosen. A wonderful teacher makes learning feel like an adventure rather than a chore.

People often use wonderful to express sincere appreciation: “What a wonderful surprise!” or “You did a wonderful job on that project.” The word carries warmth and enthusiasm. It's stronger than just “good” or “nice” but doesn't sound as formal as “magnificent” or “splendid.”