Which term means to play in a detached manner?

The term that means to play in a detached manner is "staccato." When a note is marked staccato, it indicates that the performer should play it sharply and distinctly, with a brief separation between each note. This articulation creates a clear, crisp sound that contrasts with more connected styles of playing, such as legato.

Understanding this term is crucial in interpreting music correctly, as it affects the overall texture and expression of a piece. Staccato is often employed to add emphasis or lightness to the music, allowing separate notes to stand out. The use of staccato can significantly influence the character of a passage, making it lively and energetic.

The other terms do not imply a detached manner: "sostenuto" denotes a sustained, connected style of playing; "sonoro" refers to a rich, resonant sound; and "stringendo" indicates a gradual increase in tempo, which is very much the opposite of a detached articulation.