"Lamentabile" is an Italian term that translates to "lamentable" or "regrettable" in English, conveying the meanings of "sorrow" or "unfortunate circumstances".

In music, "lamentabile" is an expression marking used to instruct performers to play with a lamenting or mournful quality, evoking a sense of sadness and regret.

In other words, when interpreting "lamentabile", performers should aim to create a musical performance that conveys a sense of lamentation and regret, allowing the audience to experience a musical ambiance that reflects the mournful and sorrowful nature of the piece being played.

Example of Lamentabile

Lamentate: VIII. Lamentabile