Executioner (noun)

1. A person who carries out a sentence of death upon a condemned person.
2. A person who is authorized to carry out a sentence of death upon a condemned person.

Origin:

Late middle english: from old french executeur, from late latin executor, from exequi "perform", from ex- "out" + sequi "follow".

Examples:

1. He had been told that the executioner was coming for him that very night.
2. The executioner showed no mercy and swung his axe with a fierce blow.
3. The convicted murderer was led to the gallows to be hanged by the executioner.
4. The executioner was widely feared and reviled by the citizens.
5. In the end, it was the executioner who paid the ultimate price for his deeds.