curse at (someone or something)
To use profane language when speaking to someone or something. I cursed at the driver that nearly backed into my car. My dad cursed at the TV when his favorite team allowed a goal in overtime.
curse at someone or something
to swear at someone or something; to use foul language at someone or something. He cursed at the jammed toaster and pounded his fist on the counter in anger. Please don't curse at me.