killeress means a female killer. Lexicurio rates it Rare gem — a strength score of 79 out of 100.
Etymology
From killer + -ess.
noun
- a female killer“Get out of the way of the killeress." And she, worse than ever leper before, was in solitude in the midst of life. She lived anyhow, slept anywhere, and was never greeted by sign or voice.”