Which term indicates producing rich or full sounds?

The term that indicates producing rich or full sounds is "sonorous." This word is often used to describe voices or sounds that are deep, resonant, and have a rich quality. In various contexts, it can refer to musical notes, vocal tones, or even the sound of certain instruments that resonate with fullness.

For example, a sonorous voice might captivate an audience, while a sonorous bell might echo beautifully across a landscape. The essence of "sonorous" lies in its ability to evoke an experience of sound that is not only heard but felt, characterized by a depth and richness that enhances the auditory experience.

Other terms do not share this specific focus on sound quality. "Teetotal" refers to abstaining from alcohol, "sundry" describes various or diverse items, and "stave" typically refers to the wooden slats of a barrel or, in a musical context, can denote a staff for musical notation. Thus, the correct choice stands out distinctly in relation to sound production.