Which term describes an unsuccessful attempt made by a person to end his or her own life?

The term "suicidal gesture" specifically refers to an unsuccessful attempt to end one's own life. This concept encompasses actions that may not be intended to result in death but are indicative of an individual's distress and a cry for help. It highlights the complexity of the person's emotional state, suggesting that they may be expressing deep suffering or a desire for attention and support, rather than a definitive intention to die.

In contrast, suicide refers to a successful act of taking one's life. Sympathy relates to feelings of pity or sorrow for someone's misfortune, which does not pertain to the act of attempting self-harm. A threat, while it may involve expressing intent to harm oneself or others, does not necessarily imply an actual attempt to do so. These distinctions underline why "suicidal gesture" is the most appropriate choice for describing an unsuccessful attempt at self-harm.