Scholar
Definition 1 of 3
Pro Tip 1/3
Studious Implication
Implies someone who loves learning and spends a lot of time studying. My cousin is such a scholar; you'll always find her buried in books.
Pro Tip 2/3
Not Always Professional
A scholar isn't always a professional; it can be anyone deeply engaged in study. Even as a hobbyist historian, he's quite the scholar on ancient Rome.
Pro Tip 3/3
Positive Connotation
Being called a scholar is usually a compliment, suggesting intelligence and diligence. After winning the science fair, her teacher called her a remarkable scholar.