Which musical term could describe playing in a joyful or lively manner?

The term "con brio" translates from Italian as "with vigor" or "with spirit." This term suggests a lively, energetic, and joyful manner of playing music. Performers are encouraged to infuse their playing with enthusiasm and brightness, reflecting a sense of liveliness that enhances the overall expression of a piece.

While other terms relate to various musical expressions, they do not convey the same joyous or lively playing style. "Doloroso," for instance, indicates a sorrowful or mournful character. "Ostinato" refers to a repeated musical phrase, which may not inherently suggest joy. "Enharmonic" deals with notes that sound the same but are notated differently, and it doesn't pertain to the emotional quality of performance. Therefore, "con brio" is the most appropriate choice for describing a joyful and lively manner of playing.