send someone packing
Fig. to send someone away; to dismiss someone, possibly rudely. I couldn't stand him anymore, so I sent him packing. The maid proved to be so incompetent that I had to send her packing.
send packing
To dismiss (someone) abruptly.
send packing, to
To dismiss summarily. The term has been around since the sixteenth century. Robert Browning used it in “The Pied Piper of Hamelin” (1842): “Sure as fate, we’ll send you packing.”