As a noun:
* The renowned scholar, Dr. Smith, has written extensively on ancient Egyptian history.
* She spent years as a scholar at the university, researching medieval literature.
* He was a brilliant scholar, earning a doctorate in astrophysics at the age of 22.
* The library's collection of books was a treasure trove for any scholar.
* Scholars from around the world gathered to discuss the latest findings in genetics.
As an adjective:
* He had a very scholarly approach to the subject, relying heavily on academic research.
* The book was written in a scholarly style, with extensive footnotes and citations.
* The conference was a scholarly gathering of experts in the field.
* Her scholarly work on Shakespearean drama has earned her widespread recognition.
You can also use "scholar" as part of a compound word, like "scholarly" or "scholarship."