Then Jephthah fled from his brethren, and dwelt in the land of Tob: and there were gathered vain men to Jephthah, and went out with him. There were gathered vain men to Jephthah - אנשים ריקים anashim reykim, empty men - persons destitute of good sense, and profligate in their manners. The word may, however, mean in this place poor persons, without property, and without employment. The versions in general consider them as plunderers.
Related Commentaries of Judges 11:3
Judges 11:3
3 Then Jephthah fled fromb his brethren, and dwelt in the land of Tob: and there were gathered vain men to Jephthah, and went out with him.