What does « Ruse / Stratagem » mean in the Quran?

Other than Him. So plot against me all together; then do not give me respite.

He said, "O my son, do not relate your vision to your brothers or they will contrive against you a plan. Indeed Satan, to man, is a manifest enemy.

So when her husband saw his shirt torn from the back, he said, "Indeed, it is of the women's plan. Indeed, your plan is great.

He said, "My Lord, prison is more to my liking than that to which they invite me. And if You do not avert from me their plan, I might incline toward them and [thus] be of the ignorant."

So his Lord responded to him and averted from him their plan. Indeed, He is the Hearing, the Knowing.

And the king said, "Bring him to me." But when the messenger came to him, [Joseph] said, "Return to your master and ask him what is the case of the women who cut their hands. Indeed, my Lord is Knowing of their plan."

That is so al-'Azeez will know that I did not betray him in [his] absence and that Allah does not guide the plan of betrayers.

So he began [the search] with their bags before the bag of his brother; then he extracted it from the bag of his brother. Thus did We plan for Joseph. He could not have taken his brother within the religion of the king except that Allah willed. We raise in degrees whom We will, but over every possessor of knowledge is one [more] knowing.

So Pharaoh went away, put together his plan, and then came [to Moses].

So resolve upon your plan and then come [forward] in line. And he has succeeded today who overcomes."

And throw what is in your right hand; it will swallow up what they have crafted. What they have crafted is but the trick of a magician, and the magician will not succeed wherever he is."

And [I swear] by Allah, I will surely plan against your idols after you have turned and gone away."

And they intended for him harm, but We made them the greatest losers.

Whoever should think that Allah will not support [Prophet Muhammad] in this world and the Hereafter - let him extend a rope to the ceiling, then cut off [his breath], and let him see: will his effort remove that which enrages [him]?

And they intended for him a plan, but We made them the most debased.

And when he brought them the truth from Us, they said, "Kill the sons of those who have believed with him and keep their women alive." But the plan of the disbelievers is not except in error.

The ways into the heavens - so that I may look at the deity of Moses; but indeed, I think he is a liar." And thus was made attractive to Pharaoh the evil of his deed, and he was averted from the [right] way. And the plan of Pharaoh was not except in ruin.

Or do they intend a plan? But those who disbelieve - they are the object of a plan.

The Day their plan will not avail them at all, nor will they be helped.

And I will give them time. Indeed, My plan is firm.

So if you have a plan, then plan against Me.

Indeed, they are planning a plan,

But I am planning a plan.

Did He not make their plan into misguidance?