An "amateur" is someone who engages in a hobby or activity without being a professional. This could include activities like painting, playing music, or sports. Amateurs often pursue their interests for the joy of it, rather than for money or fame. They may not have formal training, but their passion and enthusiasm can lead to impressive results. Many famous artists and athletes started as amateurs before becoming professionals. For example, Vincent van Gogh painted many of his masterpieces while still learning the craft. Being an amateur allows individuals to explore their creativity and develop skills at their own pace, making it a rewarding experience.