adjective A word that describes or modifies a noun or pronoun. In this case, 'extensive' describes the noun it is modifying.
Extensive research was conducted to gather data on the effects of climate change.
The novel included extensive descriptions of the setting and characters.
The historian wrote an extensive biography of the political leader.
The software update included an extensive list of bug fixes and improvements.
The company conducted an extensive market analysis before launching their new product.
The professor assigned an extensive reading list for the semester.
The artist created an extensive mural covering the entire wall of the gallery.
The writer conducted extensive research for their latest book, interviewing multiple sources and visiting various locations for accuracy.
The psychologist has extensive experience working with patients with trauma and PTSD, using a variety of therapeutic techniques to help them heal.
The researcher has extensive knowledge in the field of genetics, with multiple publications in leading scientific journals.
The engineer led an extensive project to design and build a new bridge, overseeing every aspect from planning to construction.
The lawyer has extensive experience in corporate law, handling complex mergers and acquisitions for large multinational companies.