'Fellow' in the Bible

Saul and all the people who were with him were gathered together, and came to the battle: and behold, every man's sword was against his fellow, [and there was] a very great confusion.

Do I lack madmen, that you have brought this fellow to play the madman in my presence? Shall this fellow come into my house?"

Now therefore know and consider what you will do; for evil is determined against our master, and against all his house; for he is such a worthless fellow that one can't speak to him."

Now David had said, "Surely in vain have I kept all that this fellow has in the wilderness, so that nothing was missed of all that pertained to him. He has returned me evil for good.

Please don't let my lord regard this worthless fellow, even Nabal; for as his name is, so is he. Nabal is his name, and folly is with him; but I, your handmaid, didn't see the young men of my lord, whom you sent.

But the princes of the Philistines were angry with him; and the princes of the Philistines said to him, "Make the man return, that he may go back to his place where you have appointed him, and let him not go down with us to battle, lest in the battle he become an adversary to us. For with what should this fellow reconcile himself to his lord? Should it not be with the heads of these men?