General:
* Research-oriented: This is a common and neutral term, emphasizing a focus on research.
* Scholarly: This implies a high level of academic rigor and depth.
* Empirical: This highlights the use of data and evidence.
* Scientific: This emphasizes the systematic and objective approach.
Specific:
* Groundbreaking: This describes research that is highly innovative and impactful.
* Pioneering: This implies research that is at the forefront of a field.
* Cutting-edge: Similar to groundbreaking, this emphasizes the latest advancements.
* In-depth: This highlights the thoroughness and detail of the research.
* Comprehensive: This emphasizes the broad scope of the research.
* Rigorous: This emphasizes the careful and thorough methodology.
More abstract:
* Investigative: This emphasizes the inquiry-based nature of research.
* Exploratory: This highlights the search for new knowledge and understanding.
* Analytical: This emphasizes the critical thinking and analysis involved in research.
* Theoretical: This emphasizes the development of new concepts and theories.
The best adjective to use will depend on the specific context and what you want to emphasize.