cruel
/ˈkrü(-ə)l/
adjective
disposed to inflict pain or suffering : devoid of humane feelings
causing or conducive to injury, grief, or pain
unrelieved by leniency
a cruel tyrant
noun
punishment that is very harsh and too severe for the crime
The law forbids cruel and unusual punishment.
noun
something that is very hard to bear
Life has dealt them some cruel blows in recent years.