ruthless

Refers to a person who kills without any pity or remorse.

The quality of working in a quick and effective way, without regard for cost or people's feelings.

Similar to 'ruthless killer', emphasizing the criminal act of murder.

Describes a cruel and oppressive ruler who uses power without restraint.

A very strong will to achieve something, without caring about the harm it may cause.

A part of a person's character that makes them act in a cruel or determined way.

Taking selfish or unfair advantage of people or resources.

The act of subduing someone or something by force.

The action of forcibly putting an end to something.

Refers to the fundamental nature of a person who lacks pity.