The attack was foiled.

The old man spoke and, with a feeble throw, / at Pyrrhus with a harmless dart he drave. / The jarring metal blunts it, and below / the shield-boss, down it hangs, and foils the purposed blow.

Tom never leaves the house without his homemade aluminum foil hat. He wants to use it to protect his brain from harmful radiation.

The coup attempt was foiled at the last moment.

I was foiled in my attempt.

Now that summer's approaching, families head to the ocean, taking their children with them. With the aim, often foiled, of drowning the ugliest.

Let's practice with the foil.

Investigators foiled a plot to hijack an airplane.

Let's practice foil fencing.

OK, so when you "FOIL" two binomials, you multiply the first term in each binomial, then the outer terms, then the inner terms, then the last terms, and then you combine like terms. That's what FOIL stands for. Let me show you an example.