Beautiful is an adjective used to describe something that is pleasing to the senses or mind.
Common usages of beautiful include:
1. Describing physical attractiveness: "She is a beautiful woman."
2. Referring to aesthetically pleasing things: "What a beautiful sunset!"
3. Expressing excellence: "That was a beautiful performance."
4. Describing pleasant experiences: "We had a beautiful time at the party."
5. In mathematics: "Beautiful proof" - an elegant mathematical proof.