Which word means keenly distressing to the mind or feelings?

The word "poignant" is used to describe something that is deeply affecting or moving, often evoking a strong emotional response. In the context of the question, it specifically refers to a sense of distress that sharply touches the mind or feelings, making it particularly suitable for describing experiences or memories that cause significant emotional pain or sadness.

For instance, a poignant memory might be one that brings forth feelings of nostalgia or sorrow. This captures the essence of distress and emotional intensity that aligns perfectly with the definition sought in the question.

The other options do not convey the same meaning; "cunning" relates to someone who is skillful in deceit, "scold" refers to reprimanding someone, and "momentum" pertains to the quantity of motion of a moving body. These definitions do not resonate with the specific emotional distress indicated in the question.