'Secretly' in the Bible

His tongue is an arrow causing death; the words of his mouth are deceit: he says words of peace to his neighbour, but in his heart he is waiting secretly for him.

Let a cry for help go up from their houses, when you send an armed band on them suddenly: for they have made a hole in which to take me, and have put nets for my feet secretly.

For numbers of them say evil secretly in my hearing (there is fear on every side): they say, Come, let us give witness against him; all my nearest friends, who are watching for my fall, say, It may be that he will be taken by deceit, and we will get the better of him and give him punishment.

Then King Zedekiah sent and got him out: and the king, questioning him secretly in his house, said, Is there any word from the Lord? And Jeremiah said, There is. Then he said, You will be given up into the hands of the king of Babylon.

So King Zedekiah gave his oath to Jeremiah secretly, saying, By the living Lord, who gave us our life, I will not put you to death, or give you up to these men who are desiring to take your life.

Then Johanan, the son of Kareah, said to Gedaliah in Mizpah secretly, Let me now go and put Ishmael, the son of Nethaniah, to death without anyone's knowledge: why let him take your life so that all the Jews who have come together to you may be sent in flight, and the rest of the men of Judah come to an end?