Poisoner (noun)

A person who administers poison, either with the intent to kill or cause harm.

Origin:

Middle english, from old french poisonneur, from poison (see poison).

Examples:

1. The poisoner was caught and brought to justice, facing charges for the murder of several people.
2. The poisoner was known for his cunning and deceit, using poison as a means to get what he wanted.
3. The poisoner's motives were never fully understood, as he refused to explain why he committed such heinous crimes.
4. The poisoner's methods were sophisticated, using rare and deadly toxins that were difficult to detect.
5. The poisoner was feared by many, as his actions cast a shadow over an entire community.