'Secretly' in the Bible

And Saul came to the town of Amalek, and took up his position in the valley secretly.

And Saul gave his servants orders saying, Have talk with David secretly and say to him, See how the king has delight in you, and how you are loved by all his servants: then be the king's son-in-law.

Then the Ziphites came up to Gibeah to see Saul, and said, Is not David living secretly among us in the strong places in Horesh, in the hill of Hachilah to the south of the waste land

And the Ziphites came to Saul at Gibeah, and said, Is not David waiting secretly near us in the hill of Hachilah, before the waste land?