'Cruel' in the Bible

lest thou give thine honour unto others, and thy years unto the cruel;

The merciful man doeth good to his own soul; but the cruel troubleth his own flesh.

A righteous man is concerned for the life of his beast; but the tender mercies of the wicked are cruel.

An evil man seeketh only rebellion; but a cruel messenger shall be sent against him.

Fury is cruel, and anger is outrageous; but who is able to stand before jealousy?