Suicidal (adjective)

1. Having the intention or desire to take one's own life.
2. Relating to or tending to cause suicide.
3. Extremely dangerous or likely to result in death or harm.

Origin:

The word 'suicidal' is derived from the latin word 'suicide' meaning 'the act of killing oneself'.

Examples:

1. The police were called to the scene after reports of a suicidal person on the roof.
2. The patient was admitted to the hospital after exhibiting suicidal thoughts and behavior.
3. The company's new business strategy was considered suicidal by many experts.
4. The cliff divers performed suicidal stunts that amazed the crowd.
5. The mission was considered suicidal due to the hostile environment and lack of resources.