'Curses' in the Bible

See, hate is dropping from their lips; curses are on their tongues: they say, Who gives attention to it?

Because of the sin of their mouths and the word of their lips, let them even be taken in their pride; and for their curses and their deceit,

They may give curses but you give blessing; when they come up against me, put them to shame; but let your servant be glad.