usually meaning terrible mean rude, heartbreaker, player, bastard, a heartless human takes joy in evil actions including breaking hearts destroying love, life, priceless family heirlooms,the normal well state of mind
-hold my stuff im gonna go teach him how it feels to have his heart broken...literally
-im gonna beat the shit outta him
"The Heartless have great fear for the Keyblade." -Leon
Allen: You cruel, heartless monster.
synonym: limbic retardation
antonym: morally upstanding
Giving up on the United Nations.
Expressing pseudo-interest in global cooperation.