What word describes a feeling of deep regret or sorrow?

The choice of "lamentation" is appropriate because it specifically refers to the passionate expression of grief or sorrow, often associated with deep regret over someone or something lost. The term originates from the act of lamenting, which embodies the emotional weight of mourning and remorse.

Understanding this word in context helps illuminate why it captures the essence of feeling deep regret. Lamentation can be visualized in various forms, such as poetry, songs, or even personal expressions of grief, highlighting its emotional depth and the seriousness of its connotation. This makes it particularly fitting for the concept of profound sorrow or regret.

The other options, while related to emotions or descriptions, do not convey the same depth of regret. Indelible refers to something that cannot be erased or forgotten, vivid pertains to something strikingly bright or intense, and urbane describes a person who is suave, courteous, and polished in manner. None of these adequately encapsulates the profound sorrow associated with lamentation.